| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 029603070 | Fabricating head structure or component thereof | 74 |
| 20080235938 | INDUCTANCE TEST CHIP FOR HELICAL WRAP AROUND SHIELD PERPENDICULAR MAGNETIC RECORDING - A structure and method for performing magnetic inductance testing of write heads formed on a wafer. The structure and method allows for the effective inductive testing of magnetic write heads at wafer level even if the write heads have an inductance that is too low to be effectively measured directly. A test head is constructed having a structure similar to that of the write heads, but having a significantly higher magnetic inductance. The higher magnetic inductance of the write head can be provided by extending the shaping layer to or beyond the air bearing surface plane ABS. The inductance of the test head can be further increased by increasing the width of the portion of the shaping layer that extends to the ABS (ie. shaping layer throat) and by increasing the width of the write pole throat. | 10-02-2008 |
| 20090007416 | METHOD TO CONTROL MASK PROFILE FOR READ SENSOR DEFINITION - A method for constructing a magnetoresistive sensor that avoids shadowing effects of a mask structure during sensor definition. The method includes the use of an antireflective coating (ARC) and a photosensitive mask deposited there over. The photosensitive mask is formed to cover a desired sensor area, leaving non-sensor areas exposed. A reactive ion etch is performed to transfer the pattern of the photosensitive mask onto the underlying ARC layer. The reactive ion etch (RIE) is performed with a relatively high amount of platen power. The higher platen power increases ion bombardment of the wafer, thereby increasing the physical (ie mechanical) component of material removal relative to the chemical component. This increase in the physical component of material removal result in an increased rate of removal of the photosensitive mask material relative to the ion mill resistant mask. This avoids the formation of a bulbous or mushroom shaped photoresist mask and therefore, avoids shadowing effects during subsequent manufacturing processes. | 01-08-2009 |
| 20090056106 | METHOD AND APPARATUS FOR ASSEMBLING CARRIAGE ASSEMBLY - Apparatus for assembling a carriage assembly includes space maintaining plates to be inserted between carriage arms fitted with suspensions. The plates have penetrating holes communicating with spacer holes provided in the suspensions. The carriage arms are held from opposite sides in the arrangement direction thereof. Pressing means force a ball having a larger diameter than the spacer holes in an axial direction of the spacer holes using a stick-like pressing member, in order to crimp the suspensions to the tips of the carriage arms. The guide members are made of an elastic material, and guide the pressing member to move substantially along the axis of the spacer holes in the crimping step. The guide members are fitted to the inner peripheral surfaces of the penetrating holes provided in the space maintaining plates. | 03-05-2009 |
| 20090139080 | FENCELESS MAIN POLE DEFINITION FOR ADVANCED PERPENDICULAR MAGNETIC WRITE HEAD - A method for manufacturing a magnetic write head that avoids the challenges associated with the formation of fence structures during write pole definition. A magnetic write pole material is deposited. A mask structure is deposited over the magnetic write pole material. The mask structure includes a first hard mask, a marker layer, a physically robust, inorganic RIEable image transfer layer, a second hard mask structure over the image transfer layer and a photoresist layer over the second hard mask. A reactive ion etching process can be used to transfer the image of the photoresist mask and second hard mask layer onto the image transfer layer. An ion milling is performed to define the write pole. A layer of non-magnetic material such as alumina is deposited. An ion milling is performed until the marker layer has been reached, and another reactive ion etching is performed to remove the remaining hard mask. | 06-04-2009 |
| 20090183359 | Method, apparatus and jig for manufacturing head suspension, and head suspension - A method for manufacturing a head suspension is capable of suppressing the dispersion in the vibration control effect of a head suspension and improve productivity, the manufacturing method includes a step of punching, by use of a hollow punch having a tooth portion at a distal end thereof, a vibration damper piece out from a base material having a vibration damper provided detachably on a liner through an attaching surface, to hold the vibration damper piece on a hollow internal surface of the punch, a step of positioning the punch holding the vibration damper piece on an objective portion of a semi-finished head suspension, and a step of attaching, by use of an extruding implement, the vibration damper piece on the objective portion with the attaching surface through extruding the vibration damper piece from the punch. | 07-23-2009 |
| 20090235518 | METHOD OF PRODUCING THIN FILM MAGNETIC HEAD - The method of producing a thin film magnetic head comprises the steps of: forming a recording head section by laminating thin films on a substrate; forming an air bearing surface in the recording head section; forming a coil layer on a base body of the recording head section; forming a first insulating layer on a coil wire of the coil layer and in a space defined by the coil wire other than a center part of the coil layer; forming an upper return yoke on the first insulating layer; forming a second insulating layer on the upper return yoke and the first insulating layer; flattening an upper face of the upper return yoke and an upper face of the second insulating layer so as to make the both faces as a continuous flat surface; and forming a low-thermal expansion material layer on the flat surface by sputtering. | 09-24-2009 |
| 20100126001 | Method for self aligning a lapping guide with a structure of a magnetic write head - A method for self aligning a lapping guide with a structure of a write pole. A write pole is formed over a substrate and an electrically conductive material lapping guide material is deposited in a location that is removed from the write pole. A mask is then formed over a portion of the write pole and a portion of the electrically conductive material. A material removal process such as reactive ion etching can then be performed to remove a portion of the magnetic material that is not protected by the mask structure. An magnetic material is then electroplated over the write pole with the write pole, with the mask still in place. In this way, the electroplated material has an edge that is self aligned with an edge of the electrically conductive lapping guide material, both being defined by the same mask structure. | 05-27-2010 |
| 20100139084 | HEAD ASSEMBLY MANUFACTURING APPARATUS AND HEAD ASSEMBLY MANUFACTURING METHOD - According to one embodiment, a head assembly manufacturing apparatus for manufacturing a head assembly including a load beam having a protrusion and a gimbal in contact with the load beam at the protrusion, includes: a heater configured to heat the protrusion from a back surface of the load beam; a thermal image forming module configured to form a first image which is a temperature distribution image of the gimbal by detecting infrared radiation emitted from a front surface of the gimbal; and a position detector configured to detect a position of the protrusion on the gimbal based on the first image formed by the thermal image forming module. | 06-10-2010 |
| 20100146773 | Pole width control on plated bevel main pole design of a perpendicular magnetic recording head - A main pole layer is deposited within an opening in a patterned photoresist layer on a substrate. The photoresist is thinned to expose an upper portion of a pole tip region that is then trimmed to a rectangular shape while a lower portion retains an inverted trapezoidal shape. Thereafter, a second trimming process forms a pole tip with a first width in the upper rectangular portion and a second thickness and second width which is less than the first width in the lower portion. A CMP step subsequently thins the upper portion to a first thickness of 0.04 to 0.08 microns while the second thickness remains at 0.16 to 0.32 microns. The bottom surface of the lower portion along the ABS becomes the trailing edge in a recording operation. The pole tip has a consistent first width (track width) that is not influenced by CMP process variations. | 06-17-2010 |
| 20100162555 | METHOD FOR MANUFACTURING AN ELECTRICAL LAPPING GUIDE FOR MAGNETIC WRITE HEAD CORE WIDTH OPTIMIZATION - A method for manufacturing a magnetic write head that allows the location of the flare point of a write pole to be accurately located relative to the air bearing surface. The method includes the construction of a lapping guide having an edge feature that is easily and accurately located relative to the flare point of the write pole. This edge feature provides an abrupt change in electrical resistance across the lapping guide at a point when lapping should be terminated. And, since this feature can accurately located relative to the flare point, this provides an easily discernable ending point for lapping. | 07-01-2010 |
| 20100242263 | MANUFACTURING METHOD FOR MAGNETIC HEAD SUPPORTING SUSPENSION AND SUSPENSION ASSEMBLY USED IN MANUFACTURING METHOD - A load beam blank and a flexure blank are applied to a manufacturing method for a magnetic head supporting suspension. The load beam blank includes a load beam to become a product and a frame portion to be separated from the load beam outside the product. A dimple is formed on the load beam of the load beam blank, and a positioning part on the frame portion. The flexure blank includes a flexure to become a product and a frame portion to be separated from the flexure outside the product. The frame portion of the flexure blank is formed with a fitting portion configured to be fitted to the positioning part. A tongue portion which contacts the dimple is formed in the flexure blank. | 09-30-2010 |
| 20110047785 | METHODS FOR FABRICATING MAGNETIC TRANSDUCERS USING POST-DEPOSITION TILTING - In one general embodiment, a method is provided for fabricating magnetic structures using post-deposition tilting. A thin film magnetic transducer structure is formed on a substantially planar portion of a substrate such that a plane of deposition of the thin film transducer structure is substantially parallel to a plane of the substrate. Additionally, the thin film transducer structure is caused to tilt at an angle relative to the plane of the substrate. The thin film transducer is fixed at the angle after being tilted. | 03-03-2011 |
| 20110072645 | MICROPOSITIONING RECORDING HEAD FOR A MAGNETIC STORAGE DEVICE - A method of assembling a recording head includes attaching a first segment having a plurality of toroidal coils to a second segment having a plurality of flexure beams to form a wafer assembly. The method also includes attaching the wafer assembly to a slider body such that a cavity portion of the second segment cooperates with a cavity portion in the slider body to form a transducer cavity. The method also includes vacuum attaching the slider body to a reference flat surface. The method also includes positioning a transducer body having a transducer in the transducer cavity using a touch sensor. | 03-31-2011 |
| 20110113620 | Manufacturing Method of Magnetic Head Slider - A conventional lapping process of executing element size control and surface roughness reduction at the same time is divided in the present invention into a lapping process for element size control and a lapping step for surface roughness reduction. In the lapping process for surface roughness reduction, a surface of a ceramic substrate portion is used as a stopper for limiting cut-in of abrasive grains to realize surface roughness reduction while maintaining productivity. | 05-19-2011 |
| 20110146059 | Method of manufacturing head gimbal assembly - In a manufacturing method for a head gimbal assembly, before mounting a slider on a suspension, coating films each made of solder are formed on respective terminals of a plurality of leads to be connected to a plurality of electrode pads of the slider. After mounting the slider on the suspension, the coating films are heated with laser light to thereby melt the solder, with the respective terminals of the plurality of leads in contact with the corresponding electrode pads via the respective coating films, whereby the terminals are electrically and physically connected to the electrode pads. | 06-23-2011 |
| 20110146060 | Method to make a perpendicular magnetic recording head with a side write shield - A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a separated pair of side shields and shielded from above by an upper shield. The side shields are formed by a RIE process using specific gases applied to a shield layer through a masking layer formed of material that has a slower etch rate than the shield material. A masking layer of Ta, Ru/Ta, TaN or Ti, formed on a shield layer of NiFe and using RIE gases of CH | 06-23-2011 |
| 20110179635 | CPP Structure with enhanced GMR ratio - A CPP-GMR spin valve having a CoFe/NiFe composite free layer is disclosed in which Fe content of the CoFe layer ranges from 20 to 70 atomic % and Ni content in the NiFe layer varies from 85 to 100 atomic % to maintain low Hc and λ | 07-28-2011 |
| 20110232079 | METHOD OF MANUFACTURING MAGNETORESISTIVE ELEMENT HAVING A PAIR OF FREE LAYERS - An MR element includes a first exchange coupling shield layer, an MR stack, and a second exchange coupling shield layer that are arranged in this order from the bottom, and a nonmagnetic layer surrounding the MR stack. The MR stack includes a first free layer, a spacer layer, a second free layer, and a magnetic cap layer that are arranged in this order from the bottom. The magnetization direction of the first free layer is controlled by the first exchange coupling shield layer. The second free layer is magnetically coupled to the second exchange coupling shield layer via the magnetic cap layer for magnetization direction control. In the step of forming the MR stack and the nonmagnetic layer, a protection layer is formed on a layered film that will be the MR stack later, and a mask is then formed on the protection layer. Next, the layered film and the protection layer are etched using the mask and then the nonmagnetic layer is formed. After removal of the mask, the protection layer is removed by wet etching. | 09-29-2011 |
| 20110252631 | Method of manufacturing a thin-film magnetic head - A manufacturing method for a thin-film magnetic head including first and second magnetic layers, a gap layer, a thin-film coil, and a coil insulating layer for insulating neighboring ones of turns of the thin-film coil. The manufacturing method includes the steps of: forming the first magnetic layer; forming the gap layer on the first magnetic layer; forming the second magnetic layer on the gap layer; forming the thin-film coil; and forming the coil insulating layer. The coil insulating layer is formed by stacking a plurality of insulating films formed by chemical vapor deposition. | 10-20-2011 |
| 20110277316 | SELF-ALIGNED BEVELS FOR WRITE POLES - A method, including depositing a layer of material onto a base portion of a wafer, is disclosed. The layer of material has a first surface adjacent the base portion. The method also includes depositing a pattern of masking material onto a portion of a second surface of the layer. Material from the layer of material that is unprotected by the pattern of masking material is removed from the layer of material. By removing such material a portion of the layer of material is suspended from the base portion. | 11-17-2011 |
| 20120073120 | METHOD FOR MANUFACTURING HEAD INCLUDING LIGHT SOURCE UNIT FOR THERMAL ASSIST - Provided is a method for manufacturing a thermally-assisted magnetic recording head in which a light source unit including a light source and a slider including an optical system are joined. The method comprises steps of: adhering by suction the light source unit with a back holding jig; bringing the light source unit into contact with a slider back surface of the slider; applying a load to a load application surface of the light source unit by a loading means to bring a joining surface of the light source unit into conformity with the slider back surface; positioning the light source unit apart from the slider, and then aligning the light source with the optical system; bringing again the light source unit into contact with the slider; and applying a load again to the load application surface to bring the joining surface into conformity with the slider back surface. Thus, the conformity between them can be significantly increased, thereby achieving adequately strong junction and adequately high accuracy in position. | 03-29-2012 |
| 20120073121 | METHOD FOR MANUFACTURING A DISK DRIVE HEAD SUSPENSION - A method for manufacturing a disk drive head suspension having a plated load point dimple. An aperture is etched into the spring metal member. A photoresist mask having an opening with load point-defining side walls and a load point diameter is formed over a portion of a spring metal member including the aperture. Metal is plated onto the spring metal member and into the aperture in the opening to form a load point having the load point diameter on the spring metal member. | 03-29-2012 |
| 20120117791 | METHOD FOR MANUFACTURING A THERMALLY-ASSISTED MAGNETIC HEAD - In a method for manufacturing a thermally-assisted magnetic head that includes a slider and an LD unit, the slider including an air bearing surface (ABS) that faces a recording medium and including a waveguide with a core for light propagation that extends from a light entering surface, which is different from the ABS, to the ABS, the LD unit being attached to the light entering surface of the slider, and the thermally-assisted magnetic head performing magnetic recording while heating the recording medium with near-field light that is excited from linearly polarized laser light, the LD unit is disposed in a position facing the light entering surface of the slider, a photo detector is disposed in a position facing the ABS of the slider, and a polarizer transmitting only light having a polarization component that is orthogonal to a polarization direction of the linearly polarized laser light is disposed between the ABS and the photo detector. An LD of the LD unit is activated, and the linearly polarized laser light is enabled to enter into the core from the light entering surface of the slider. Light radiated from the ABS is enabled to enter into the polarizer, and an alignment of the slider and the LD unit is performed while the photo detector detects light that is transmitted through the polarizer. | 05-17-2012 |
| 20120222291 | FABRICATING METHOD OF MAGNETORESISTANCE SENSOR - A fabricating method of a magnetoresistance sensor is provided with cost effective and process flexibility features. Firstly, a substrate is provided. Then, at least one magnetoresistance structure and at least one bonding pad are formed over the substrate, wherein the bonding pad is electrically connected with the magnetoresistance structure. Then, a passivation layer is formed over the magnetoresistance structure and the bonding pad. Then, a magnetic shielding and concentrator structure is formed over the passivation layer at a location corresponding to the magnetoresistance structure. Finally, bonding pad openings is formed on the passivation layer by patterned polyimide, thereby exposing the bonding pad. After bonding pad was opened, the patterned polyimide can be removed or retained as an additional protection layer. | 09-06-2012 |
| 20120279051 | Method of Forming a Plasmon Antenna with Magnetic Core for Thermally Assisted Magnetic Recording - A method of forming a TAMR (Thermal Assisted Magnetic Recording) write head that uses the energy of optical-laser generated edge plasmons in a plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The method incorporates forming a magnetic core within the plasmon antenna, so the antenna effectively becomes an extension of the magnetic pole and produces a magnetic field whose maximum gradient overlaps the region being heated by the edge plasmons generated in the conducting layer of the antenna surrounding the antenna's magnetic core. | 11-08-2012 |
| 20120324720 | MAGNETIC HEAD MANUFACTURING METHOD - A magnetic head manufacturing method is provided. The method includes a wafer process, a rowbar process for slicing a bar-shaped rowbar from a wafer passing through the wafer process, and performing lapping, air bearing surface (ABS) formation, cleaning, and carbon protective film deposition processes on the rowbar, a write pole test process for measuring an effective track width of the magnetic heads in the bar-shaped rowbar by using a magnetic force microscope (MFM), a scanning Hall probe microscope (SHPM), or a scanning magneto resistance effect microscope (SMRM), a read element test process for measuring electromagnetic conversion characteristics of each of read elements within the bar-shaped rowbar, a slider process for dividing up each of the magnetic heads and machining the bar-shaped rowbar into individual chip shape sliders, and a head gimbal assembly (HGA) process. | 12-27-2012 |
| 20130000107 | Contact feature for use with transducing devices - A transducer having an external contact surface includes a writer and a contact member. The writer has a portion extendable relative to an adjacent portion of the external contact surface. The contact member surrounds at least a portion of the extendable writer portion and is spaced from the extendable writer portion. The coefficient of thermal expansion of the contact member is approximately equal to the coefficient of thermal expansion of the extendable writer portion. | 01-03-2013 |
| 20130019467 | METHOD FOR MANUFACTURING A MAGNETIC WRITE POLE HAVING STRAIGHT SIDE WALLS AND A WELL DEFINED TRACK-WIDTH - A method for manufacturing a magnetic write head having a write pole with a very narrow track width, straight well defined sides and a well defined trailing edge width (e.g. track-width). The method includes uses two separate chemical mechanical polishing processes that stop at separate CMP stop layers. The first CMP stop layer is deposited directly over a RIEable fill layer. A RIE mask, is formed over the fill layer and first CMP stop layer, the RIE mask having an opening. A trench then is formed in the RIEable fill layer. A second CMP stop layer is then deposited into the trench and over the RIE mask, followed by plating of a magnetic material. First and second chemical mechanical polishing processes are then performed, the first stopping at the first CMP stop and the second stopping at the second CMP stop. | 01-24-2013 |
| 20130139378 | METHOD OF MANUFACTURING THERMALLY-ASSISTED MAGNETIC RECORDING HEAD AND ALIGNMENT APPARATUS - A method of manufacturing a thermally-assisted magnetic recording head includes: providing a light source unit including a light source; providing a substrate having a thermally-assisted magnetic recording head section thereon, the thermally-assisted magnetic recording head section including a magnetic pole, a plasmon generator, and an optical waveguide; inserting a metal between the light source unit and the substrate, and thus allowing the metal to be melted; and performing alignment between the light source unit and the thermally-assisted magnetic recording head section under application of pressure in a direction that allows the light source unit and the substrate to approach each other, while maintaining the metal melted. | 06-06-2013 |
| 20130283601 | METHOD OF MANUFACTURING MAGNETIC HEAD FOR PERPENDICULAR MAGNETIC RECORDING HAVING A RETURN PATH SECTION - A method of manufacturing a magnetic head includes the step of forming an accommodation part and the step of forming a return path section. The return path section lies between a main pole and a top surface of a substrate, and connects a shield and part of the main pole away from a medium facing surface to each other so that a space through which part of a coil passes is defined. The accommodation part accommodates at least part of the return path section. The step of forming the return path section forms first to third portions simultaneously. The first portion is located closer to the top surface of the substrate than is the space. The second portion is located closer to the medium facing surface than is the space. The third portion is located farther from the medium facing surface than is the space. | 10-31-2013 |
| 20140298644 | METHOD OF MANUFACTURING PLASMON GENERATOR - A method of manufacturing a plasmon generator includes the steps of: an initial film made of a metal polycrystal and including a pre-plasmon-generator portion that later becomes the plasmon generator; heating the initial film with heating light so that a plurality of crystal grains constituting the metal polycrystal grow at least in the pre-plasmon-generator portion; stopping the heating of the initial film; and forming the plasmon generator by processing the initial film after the step of stopping the heating. The step of forming the plasmon generator includes the step of providing the pre-plasmon-generator portion with a front end face that generates near-field light. | 10-09-2014 |
| 20150074986 | SPIN TORQUE OSCILLATOR, METHOD OF MANUFACTURING THE SAME, MAGNETIC RECORDING HEAD, MAGNETIC HEAD ASSEMBLY, AND MAGNETIC RECORDING APPARATUS - According to one embodiment, there is provided a spin torque oscillator including an oscillation layer formed of a magnetic material, a spin injection layer formed of a magnetic material and configured to inject a spin into the oscillation layer, and a current confinement layer including an insulating portion formed of an oxide or a nitride and a conductive portion formed of a nonmagnetic metal and penetrating the insulating portion in a direction of stacking. The conductive portion of the current confinement layer is positioned near a central portion of a plane of a device region including the oscillation layer and the spin injection layer. | 03-19-2015 |
| 029603080 | Treating to affect magnetic properties | 2 |
| 20110308074 | Perpendicular magnetic recording head laminated with AFM-FM phase change material - A PMR writer is disclosed that minimizes pole erasure during non-writing and maximize write field during writing through an AFM-FM phase change material that is in an AFM state during non-writing and switches to a FM state by heating during writing. The main pole layer including the write pole may be comprised of a laminated structure having a plurality of “n” ferromagnetic layers and “n−1” AFM-FM phase change material layers arranged in an alternating manner. The AFM-FM phase change material is preferably a FeRh or FeRhX alloy (X=Pt, Pd, or Ir) having a Rh content>35 atomic %. AFM-FM phase change material may also be used as a flux gate to prevent yoke flux from leaking into the write pole tip. Heating for the AFM to FM transition is provided by write coils and/or a coil located near the AFM-FM phase change material to enable faster transition times. | 12-22-2011 |
| 20130212871 | MANUFACTURING METHOD OF A SLIDER AND MANUFACTURING APPARATUS THEREOF - A manufacturing method of a slider includes steps of (a) providing a row bar with a plurality of slider elements connecting together, the row bar having an air bearing surface, a back surface opposite the air bearing surface, a bonding surface and a bottom surface opposite the bonding surface; (b) grinding the bottom surface of the row bar; (c) lapping the air bearing surface of the row bar so as to obtain a predetermined requirement, and applying a first magnetic field with a first direction during lapping the air bearing surface, and the first direction being parallel to the air bearing surface and the bonding surface; and (d) cutting the row bar into a plurality of individual sliders. The present invention can maintain a good performance of a magnetic head during the manufacturing process. | 08-22-2013 |
| 029603090 | Including measuring or testing | 19 |
| 20090144965 | Method of manufacturing magnetic head and magnetic head substructure - A method of manufacturing a magnetic head includes the steps of: fabricating a magnetic head substructure by forming components of a plurality of magnetic heads on a substrate, the substructure including a plurality of pre-head portions aligned in a plurality of rows; and fabricating a plurality of magnetic heads by separating the plurality of pre-head portions from one another by cutting the substructure. In the step of fabricating the substructure, a plurality of sensors are formed, the sensors respectively showing individual sensor values corresponding to values of a plurality of different parameters each of which has an influence on characteristics of the magnetic head relating to a pole layer and each of which depends on the position of a medium facing surface. In the step of fabricating the magnetic heads, the medium facing surfaces are formed by lapping a surface formed by cutting the substructure so that a composite sensor value that depends on the plurality of individual sensor values shown by the plurality of sensors becomes a predetermined value. | 06-11-2009 |
| 20090165285 | METHOD OF MANUFACTURING THERMALLY ASSISTED MAGNETIC HEAD AND APERTURE APPARATUS USED IN THE METHOD - A method comprises an opposing step of arranging a light-shielding film | 07-02-2009 |
| 20100077600 | Method for Manufacturing Thin Film Magnetic Heads - According to one embodiment, a method for manufacturing a thin film magnetic head includes forming on a substrate magnetic head portions having a magnetoresistive element and resistance detection elements for measuring an amount of polishing; slicing the substrate to form at least one row bar; polishing the ABS of each row bar; forming rails on the polished ABS; and cutting each row bar to separate each magnetic head portion. The step of polishing the ABS includes measuring a resistance of each resistance detection element and a resistance of each magnetoresistive element; calculating an offset value between the resistance detection element and the magnetoresistive element; and calculating a final resistance of the resistance detection element by using the calculated offset value. When the resistance of the resistance detection element reaches the final resistance, polishing of the ABS of the row bar is terminated. Other methods are presented as well. | 04-01-2010 |
| 20120096705 | Process tray for head stack assembly, shipping tool and manufacturing method for the same - A process tray for head stack assembly includes a main tray and at least one jig. Each jig has a main body with one set of locating holes formed thereon and two elastic arms respectively extending from two sides of the main body for providing force to hold the head stack assembly. The main tray has a main frame and a supporting frame disposed within and connected to the main frame for supporting the jig and/or the head stack assembly. The supporting frame has at least one set of locating bumps formed thereon for locating at least one jig on the main tray by respectively inserting the locating bumps into the locating holes formed on the jig. The process tray of the present invention can carry the head stack assembly during the whole head stack assembly manufacturing process, thereby simplifying the HSA manufacturing process, increasing productive efficiency and reducing the cost. | 04-26-2012 |
| 029603110 | With dual gap materials | 2 |
| 20090165286 | METHOD FOR MANUFACTURING AN ULTRA NARROW GAP MAGNETORESISTIVE SENSOR - A method for manufacturing a magnetoresistive sensor that decreases the stack height of the sensor. The method includes forming a sensor structure having at its top, a Ru layer and a Ta layer over the Ru layer. An annealing process is performed to set the magnetization of the pinned layer of the sensor structure. After the annealing process has been completed and the Ta layer is no longer needed, an ion milling process is performed to remove the Ta layer. | 07-02-2009 |
| 20100064507 | Method of manufacturing a thin-film magnetic head - A method of manufacturing a magnetic head that includes a reproducing head, a recording head, and an isolation film for magnetically isolating the reproducing head and the recording head from each other. The method includes the steps of: forming the reproducing head; forming the recording head; and forming the isolation film. The isolation film is formed by stacking a plurality of insulating films formed by chemical vapor deposition. | 03-18-2010 |
| 029603120 | With significant slider/housing shaping or treating | 4 |
| 20080222878 | Method of manufacturing magnetic head - A method of manufacturing a magnetic head includes the steps of: fabricating a substructure in which pre-head portions are aligned in a plurality of rows by forming components of a plurality of magnetic heads on a single substrate; and fabricating the plurality of magnetic heads by separating the pre-head portions from one another through cutting the substructure. In the step of fabricating the substructure, the resistance of an MR film that will be formed into an MR element by undergoing lapping later is detected to determine the target position of the boundary between a track width defining portion and a wide portion of a pole layer based on the resistance thus obtained, and the pole layer is thereby formed. In the step of fabricating the magnetic heads, the surface formed by cutting the substructure is lapped such that the MR film is lapped and the resistance thereof thereby reaches a predetermined value. | 09-18-2008 |
| 20080222879 | Method of manufacturing magnetic head and method of manufacturing magnetic head substructure - A method of manufacturing a magnetic head includes the steps of: fabricating a substructure in which pre-head portions are aligned in a plurality of rows by forming components of a plurality of magnetic heads on a single substrate; and fabricating the plurality of magnetic heads by separating the pre-head portions from one another through cutting the substructure. In the step of fabricating the substructure, the resistance of an MR film that will be formed into an MR element by undergoing lapping later is detected to determine the target position of the boundary between a track width defining portion and a wide portion of a pole layer based on the resistance detected, and the pole layer is thereby formed. In the step of fabricating the magnetic heads, the surface formed by cutting the substructure is lapped such that the MR film is lapped and the resistance thereof thereby reaches a predetermined value. | 09-18-2008 |
| 20080282532 | Method of making thin film magnetic head using electric lapping guide - As a reticle pattern corresponding to a resist pattern for magnetic detection element layer and a reticle pattern corresponding to a resist pattern for conductive layer in a reticle, a reticle having a convex portion that projects in the height direction and a concave portion that dents in the direction opposite to the convex portion, respectively, is used to form a convex portion and concave portion corresponding to the convex portion and concave portion of the reticle pattern in the resist pattern for magnetic detection element and in the resist pattern for conductive layer, respectively. Then, with each resist pattern as a mask, unnecessary portions of the magnetic detection element layer and conductive layer are removed to determine an initial height of the magnetic detection element layer and an initial height perpendicular to a medium facing surface of the conductive layer, and to form a convex portion and concave portion corresponding to the convex portion and concave portion of the resist pattern in the magnetic detection element layer and in the conductive layer, respectively. Then, based on a ratio between a width in the track width direction of the convex portion of the magnetic detection element layer and a width in the track width direction of the concave portion of the magnetic detection element layer, a deviation in the height direction concerning a surface intersecting the height direction of the magnetic detection element layer is obtained, and based on a ratio between a width in the track width direction of the convex portion of the conductive layer and a width in the track width direction of the concave portion of the conductive layer, a deviation in the height direction concerning a surface intersecting the height direction of the conductive layer is obtained, and then based on the deviation in the height direction of the magnetic detection element layer and the deviation in the height direction of the conductive layer, the medium facing surface is ground with the conductive layer as a resistance sensor so that the height of the magnetic detection element layer be a desired value. | 11-20-2008 |
| 20090165287 | MANUFACTURING METHOD FOR MAGNETIC HEAD SLIDER - A bar is cut from a wafer having head elements arrayed thereon along sectional surfaces parallel to each other and orthogonal to a wafer surface. One sectional surface is set as a medium opposing surface of a head slider. Polishing processing is performed on the bar, starting from a “surface corresponding to rear side” corresponding to a wafer rear surface, with a grinding surface rubbed in a transverse direction of the bar. The roughness of the “surface corresponding to rear side” of the bar is reduced. By suppressing the surface roughness in this way, a read element and write element among head elements can be obtained with high dimensional accuracy. Such a manufacturing method considerably contributes to reduction of a dimension error of a head element, in particular, a write element. | 07-02-2009 |
| 029603130 | Depositing magnetic layer or coating | 9 |
| 20090265917 | METHOD OF MANUFACTURING THIN FILM MAGNETIC HEAD - By the method of manufacturing a thin film magnetic head, a magnetic material having a suitable characteristic can be used for manufacturing a magnetic pole and corrosion of the magnetic pole can be prevented. The method comprises: a step of forming a multilayered magnetic pole; a step of forming a stopper layer on the magnetic pole; a step of forming an insulating layer on the stopper layer; a step of polishing the insulating layer, by chemical mechanical polishing process, until an upper face of the stopper layer is exposed; a step of removing the stopper layer, by dry etching process with a reactive gas, until an upper face of the magnetic head is exposed; a step of removing the upper face of the magnetic pole, by dry etching process with an inert gas, until reaching a prescribed depth; and a step of polishing the upper face of the magnetic pole, by chemical mechanical polishing process, until the upper face of the magnetic pole is flattened. | 10-29-2009 |
| 029603140 | Plural magnetic deposition layers | 5 |
| 20080209714 | AP1 layer for TMR device - A TMR read head with improved voltage breakdown is formed by laying down the AP1 layer as two or more layers. Each AP1 sub-layer is exposed to a low energy plasma for a short time before the next layer is deposited. This results in a smooth surface, onto which to deposit the tunneling barrier layer, with no disruption of the surface crystal structure of the completed AP1 layer. | 09-04-2008 |
| 20080276448 | METHOD FOR DEFINING THE TRAILING SHIELD THROAT HEIGHT IN A PERPENDICULAR MAGNETIC RECORDING WRITE HEAD - A method of forming a perpendicular magnetic recording write head having a trailing shield (TS) with a precisely defined throat height (TH) on an air-bearing slider includes depositing an electrical lapping guide (ELG) layer on the substrate adjacent to and spaced from the write pole (WP) layer. A nonmagnetic TS pad layer is deposited on both the gap layer and the ELG layer, with the TS pad layer patterned to have a front edge extending across the both the ELG layer and the gap layer and recessed from the line where the substrate will be later cut to form the slider. An ELG protection layer is patterned on the ELG layer, the TS pad layer material is removed from the ELG layer in the region recessed from the TS pad layer front edge, and the ELG layer is removed in regions not covered by the ELG protection layer. The ELG protection layer is then removed, leaving the ELG layer having a back edge collinear with the TS pad layer front edge so that the TS TH is precisely defined during subsequent lapping of the slider. | 11-13-2008 |
| 20090038143 | Method of manufacturing magneto-resistive device, magnetic head, head suspension assembly and magnetic disk apparatus - A method is provided for manufacturing a magneto-resistive device. The magneto-resistive device is for reducing the deterioration in the characteristics of the device due to annealing. The magneto-resistive device has a magneto-resistive layer formed on one surface side of a base, and an insulating layer formed of two layers and deposited around the magneto-resistive layer. The layer of the insulating layer closest to the base is made of a metal or semiconductor oxide. This layer extends over end faces of a plurality of layers made of different materials from one another, which make up the magneto-resistive device, and is in contact with the end faces of the plurality of layers with the same materials. | 02-12-2009 |
| 20100024201 | METHOD FOR FABRICATING NARROW MAGNETIC READ WIDTH TMR/CPP SENSORS - A method for manufacturing a manufacturing a magnetoresistive sensor that allows the sensor to be constructed with a very narrow and well controlled track width. The method includes depositing a layer of diamond like carbon over a series of sensor layers. A first mask is then formed to define a sensor, and an ion milling is performed to remove sensor material not protected by the first mask. Then, a second mask is formed, and a hard bias layer is deposited to the thickness of the sensor layers. The second mask is then lifted off and a CMP is performed to remove the first mask structure. Because the all areas other than the area directly over the sensor are substantially planar (due to the removal of the second mask and the low level of the hard bias material) a quick, gentle CMP can be used to remove the first mask layer even if the first mask is small, such as for definition of a very narrow track-width sensor. | 02-04-2010 |
| 20100037453 | Current confining layer for GMR device - Concerns about inadequate electromigration robustness in CCP CPP GMR devices have been overcome by adding magnesium to the current confining structures that are presently in use. In one embodiment the alumina layer, in which the current carrying copper regions are embedded, is fully replaced by a magnesia layer. In other embodiments, alumina is still used but a layer of magnesium is included within the structure before it is subjected to ion assisted oxidation. | 02-18-2010 |
| 029603150 | With etching or machining of magnetic material | 3 |
| 20090211081 | CONTROLLED LAPPING FOR AN ABS DAMASCENE PROCESS - Methods of lapping rows of recording heads are described after an air bearing surface (ABS) damascene process is performed. The ABS damascene process uses a selective etching process to form voids in the row of recording heads where conductive material forms a feature in the recording head, such as a wrap around shield. The conductive material is then deposited on the ABS of the row to fill the voids, and the row is lapped. According to methods provided herein, the resistance of one or more lapping guides in the row of recording heads is monitored to determine when the conductive material is removed by the lapping process. When the monitored resistance indicates that the conductive material is removed, the lapping process is stopped. The resistance across one or more lapping guides may also be used to control the lapping process to uniformly lap the conductive material from the ABS. | 08-27-2009 |
| 20110146061 | METHOD FOR MANUFACTURING A MAGNETORESISTIVE SENSOR HAVING A FLAT SHIELD - A method for manufacturing a magnetoresistive sensor that results in the sensor having a very flat top magnetic shield. The process involves depositing a plurality of sensor layers and then depositing a thin high density carbon CMP stop layer over the sensor layers and forming a mask over the CMP stop layer. An ion milling is performed to define the sensor. Then a thin insulating layer and magnetic hard bias layer are deposited. A chemical mechanical polishing is performed to remove the mask and a reactive ion etching is performed to remove the remaining carbon CMP stop layer. Because the CMP stop layer is very dense and hard, it can be made very thin. This means that when it is removed by reactive ion etching, there is very little notching over the sensor, thereby allowing the upper shield (deposited there-over) to be very thin. | 06-23-2011 |
| 20110258841 | Planarization Methods For Patterned Media Disks - A method is provided for forming a plurality of regions of magnetic material in a substrate having a first approximately planar surface. The method comprises the steps of fabricating projections in the first surface of the substrate, depositing onto the first surface a magnetic material in such a way that the tops of the projections are covered with magnetic material, and depositing filler material atop the substrate so produced. The filler material may then be planarized, for example by chemical-mechanical polishing. In an alternative embodiment magnetic material is deposited on a substrate and portions of it are removed, leaving islands of material. Filler material is then deposited, which may be planarized. | 10-27-2011 |
| 029603160 | Machining magnetic material (e.g., grinding, etching, polishing) | 15 |
| 20080271308 | METHOD OF MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD HAVING A WRAP-AROUND TRAILING SHIELD AND A CONCAVE TRAILING EDGE MAIN POLE - A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method allows the write head to be formed with a write pole having a concave trailing edge. The method further allows the amount of concavity of the trailing edge to be accurately and carefully controlled both within a wafer and between wafers. A write pole is formed using a mask that includes a hard mask, a RIEable layer and an endpoint detection layer. A layer of non-magnetic material (ALD layer) h deposited, and then, an ion milling process is used to remove a portion of the ALD layer disposed over the write pole and mask. A reactive ion etch process is performed to remove the RIEable layer leaving the ALD layer to form non-magnetic side walls with upper portions that extend above the write pole. Another ion milling is then performed, preferably at an angle relative to normal, such that shadowing from the upper portions of the non-magnetic side walls causes the ion milling to form the write pole with a concave trailing edge. | 11-06-2008 |
| 20100146774 | Method and Apparatus for Lapping Magnetic Head Slider, and Manufacturing Method of Thin-Film Magnetic Head - A method of lapping a magnetic head slider includes a step of lapping a lapping surface of a row bar provided with a plurality of MR read head elements arranged along at least one line, a step of obtaining at least one output signal from at least one of the plurality of MR read head elements of the row bar during lapping, the at least one output signal corresponding to element resistance, a step of detecting at least one peak value of the obtained at least one output signal, and a step of controlling an amount of lapping of the row bar depending upon the detected at least one peak value. | 06-17-2010 |
| 20100162556 | ELECTRICAL LAPPING GUIDE FOR IMPROVING MAGNETIC CORE WIDTH IN A MAGNETIC RECORDING HEAD - A method for manufacturing a magnetic head for magnetic data recording, that allows a lapping termination point to be easily and accurately determined during lapping. The method includes constructing a lapping guide that has an electrically is formed to provide an abrupt change in resistance at a point where lapping should be terminated. This point of abrupt resistance change is located relative to the flare point of the write pole that the distance between the flare point and the air bearing surface can be accurately maintained. This abrupt resistance change also makes it possible to monitor both a stripe height defining rough lapping and an angled kiss lapping process using a single measurement channel. | 07-01-2010 |
| 20110239444 | Method of Manufacturing Lapping Plate, and Method of Manufacturing Magnetic Head Slider using the Lapping Plate - A method of manufacturing a lapping plate which has abrasive grains fixed in the plate and which is used for lapping of the air bearing surface of a magnetic head. Abrasive grains fixed in the lapping plate are subjected to an abrasive digging process to selectively lap the surface of the lapping plate in the vicinity of the abrasive grains, and the dug abrasive grains are subjected to an equalization process to make their abrasive grain heights equal. | 10-06-2011 |
| 20130081262 | MANUFACTURING METHOD FOR TOTATING DEVICE HAVING IMPROVED QUALITY - With at least one from among a base member and a hub member as a workpiece, a manufacturing method for a rotating device including a hub member on which a recording disk is to be mounted and a base member configured to rotatably support the hub member via a bearing unit comprises: a cutting step in which a cutting water agent is applied while the workpiece is being cut; a removing step in which the cutting water agent that remains adhered to the workpiece after cutting is removed; and an assembling step in which the rotating device is assembled using the workpiece after removing the cutting water agent. | 04-04-2013 |
| 20130152381 | METHODS FOR TEXTURING MAGNETIC HEAD SURFACE - A method according to one embodiment includes contacting an oxidant with an AlTiC portion of a magnetic head for recessing TiC grains of the AlTiC portion. A method according to another embodiment includes contacting a peroxide with an AlTiC portion of a magnetic head for recessing TiC grains of the AlTiC portion from a media bearing surface of the AlTiC portion. | 06-20-2013 |
| 20130219699 | MANUFACTURING METHOD OF A SLIDER AND MANUFACTURING APPARATUS THEREOF - A manufacturing method of a slider includes steps of: (a) providing a row bar with a plurality of slider elements connecting together; (b) lapping surfaces of the row bar so as to obtain a predetermined requirement; (c) lowering the temperature of the surfaces lapped in the step (b) before and/or during lapping; and (d) cutting the row bar into a plurality of sliders. The present invention can prevent a local high temperature generated on the magnetic head during lapping so that the performance of the magnetic head is improved. | 08-29-2013 |
| 20140123473 | Method of Forming a TAMR Writer with a Concave Leading Shield for Enhanced Field Magnitude - A method of forming a TAMR (Thermal Assisted Magnetic Recording) write head that uses the energy of optical-laser excited plasmons to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The magnetic field of the write head is enhanced by the formation of a leading shield that is formed in a concave geometrical shape and partially surrounds the waveguide portion of the head within the concavity, which allows the distal end of the waveguide to extend to the ABS plane of the write head. This arrangement reduces the gap between the shield and the magnetic pole and does not interfere with the ability of the waveguide to efficiently transfer its optical energy to the plasmon generator and, ultimately, to the surface of the magnetic recording medium. | 05-08-2014 |
| 029603180 | By etching | 7 |
| 20090144966 | LEADING EDGE TAPERED BUMP WITH ELECTRICAL LAPPING GUIDE CONTROL FOR WRAP AROUND SHIELD - A method for manufacturing a perpendicular magnetic write head having a trailing shield and with a tapered step. The method includes forming a write pole with a non-magnetic trailing gap and first and second non-magnetic side gap layers. A mask is formed having an opening over a portion of the write pole that is configured to define a non-magnetic bump. A non-magnetic bump material is deposited into the opening in a manner that defines a non-magnetic bump having a tapered front edge. A magnetic wrap around shield can then be formed over the non-magnetic bump, so that the bump forms a tapered stepped feature on the wrap-around magnetic shield. The bump location can be controlled by an electric lapping guide, which is defined to be aligned to the bump front edge. | 06-11-2009 |
| 20100107402 | Methods Of Making Magnetic Write Heads With Use Of A Resist Channel Shrinking Solution Having Corrosion Inhibitors - One preferred method for use in making a device structure with use of the resist channel shrinking solution includes the steps of forming a first pedestal portion within a channel of a patterned resist; applying a resist channel shrinking solution comprising a resist channel shrinking film and corrosion inhibitors within the channel of the patterned resist; baking the resist channel shrinking solution over the patterned resist to thereby reduce a width of the channel of the patterned resist; removing the resist channel shrinking solution; and forming a second pedestal portion within the reduced-width channel of the patterned resist. Advantageously, the oxide layer and the corrosion inhibitors of the resist channel shrinking solution reduce corrosion in the pedestal during the act of baking the resist channel shrinking solution. | 05-06-2010 |
| 20110041322 | Method of manufacturing magnetic head for perpendicular magnetic recording including two side shields - A magnetic head includes a pole layer, first and second side shields, and an encasing layer having a pole groove that accommodates the pole layer and first and second side shield grooves that accommodate the first and second side shields. In a manufacturing method for the magnetic head, the pole groove and first and second initial side shield grooves are formed in a nonmagnetic layer using an etching mask layer having first to third openings. In the manufacturing method, a wall face of the first initial side shield groove that is closer to the pole groove and a wall face of the second initial side shield groove that is closer to the pole groove are etched by dry etching to thereby complete the first and second side shield grooves. | 02-24-2011 |
| 20110146062 | METHOD FOR MANUFACTURING A MAGNETIC WRITE HEAD HAVING A WRAP AROUND SHIELD THAT IS MAGNETICALLY COUPLED WITH A LEADING MAGNETIC SHIELD - A method for manufacturing a magnetic write head having a leading magnetic shield and a trailing magnetic shield that are arranged to prevent the lost of magnetic write field to the trailing magnetic shield. The write head includes a non-magnetic step layer that provides additional spacing between the trailing magnetic shield and the write pole at a region removed from the air bearing surface. | 06-23-2011 |
| 20120304454 | PROCESS FOR FABRICATING A MAGNETIC POLE AND SHIELDS - A process for fabricating a magnetic recording transducer for use in a data storage system comprises providing a substrate, an underlayer and a first nonmagnetic intermediate layer deposited to a first thickness on and in contact with the underlayer, performing a first scanning polishing on a first section of the first intermediate layer to planarize the first section of the first intermediate layer to a second thickness, providing a main pole in the planarized first section of the first intermediate layer, providing a first pattern of photoresist on and in contact with the first section of the first intermediate layer, the pattern comprising an aperture to define a side shield trench, performing a wet etch to remove at least a portion of the first intermediate layer thereby exposing at least one of the plurality of main pole sides, and depositing side shield material in the side shield trench. | 12-06-2012 |
| 20130081263 | METHOD FOR MANUFACTURING A MAGNETIC WRITE POLE OF A PERPENDICULAR MAGNETIC WRITE HEAD USING NOVEL MASK FABRICATION - A method for manufacturing a magnetic write pole of a magnetic write head for perpendicular magnetic recording. A magnetic write pole material is deposited, followed by union milling hard mask, a polymer mask under-layer followed by a dielectric hard mask material, followed by a photoresist. The photoresist is patterned to define a write pole shape and the shape of the patterned photoresist is transferred onto the underlying dielectric hard mask by a novel reactive ion etching that is performed in a chemistry that includes one or more fluorine containing gases and He. The presence of He in the reactive ion etching tool helps to improve the profile of the patterned dielectric hard mask. In addition, RIE parameters such a gas ratio (e.g. CF4 to CHF3 gas ratio) and power ratio (e.g. source power to bias power) are adjusted to optimize the profile of the patterned dielectric mask. | 04-04-2013 |
| 20160055865 | METHOD FOR PROVIDING A MAGNETIC RECORDING TRANSDUCER USING A CHEMICAL BUFFER - A method for fabricating a magnetic recording transducer is described. The magnetic recording transducer has an underlayer and at least one layer on the underlayer. The layer(s) are capable of including an aperture that exposes a portion of the underlayer. The method includes providing a neutralized aqueous solution having a chemical buffer therein. The chemical buffer forms a nonionic full film corrosion inhibitor. The method also includes exposing a portion of the magnetic recording transducer including the layer(s) to the neutralized aqueous solution including the chemical buffer. In one aspect this exposure occurs through a chemical mechanical planarization. | 02-25-2016 |
| 029603200 | With bond/laminating preformed parts, at least two magnetic | 1 |
| 20160012834 | DISK DRIVE HEAD SUSPENSION TAIL WITH STIFFENED EDGE ALIGNMENT FEATURES | 01-14-2016 |
| 029603230 | Providing winding | 3 |
| 20090313811 | METHOD OF MANUFACTURING A PERPENDICULAR MAGNETIC RECORDING HEAD - In a manufacturing process of a head slider according to one embodiment, a flare point height of a main pole is estimated according to the following procedure. Magnetic field intensity is measured by a sensor, and a maximum point of the magnetic field is assumed as a center of the main pole. The measurement is moved from the center point along a Z direction, such that a measurement value corresponds to a reference value. An attenuation rate (a gradient) of a measurement value of magnetic field intensity to displacement in the Z direction of the measurement point is calculated and normalized with the measurement value, and plotted with respect to the measurement value itself. The gradient is compared to a gradient in a database of samples being separately prepared, each sample having known flare point height, allowing an estimation of the flare point height of the said sample from the comparison. | 12-24-2009 |
| 20160118064 | WRITE HEAD CORE - Implementations disclosed and claimed herein include a method of write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature. | 04-28-2016 |
| 029603260 | Preformed winding | 1 |
| 20120210566 | METHOD OF MANUFACTURING A MAGNETIC HEAD FOR PERPENDICULAR MAGNETIC RECORDING - A method of manufacturing a magnetic head includes the steps of: forming a pole-layer-encasing layer having a pole-layer-encasing section; and forming a pole layer in the pole-layer-encasing section. The pole layer includes a first layer, and a second layer formed thereon. The step of forming the pole layer includes the steps of: forming an initial first layer by physical vapor deposition; etching the surface of the initial first layer by dry etching so that the initial first layer becomes the first layer; and forming the second layer on the first layer. | 08-23-2012 |
| 029603270 | Specified diverse magnetic materials | 2 |
| 20090165288 | TMR device with surfactant layer on top of CoFexBy/CoFez inner pinned layer - A high performance TMR element is fabricated by inserting an oxygen surfactant layer (OSL) between a pinned layer and AlOx tunnel barrier layer in a bottom spin valve configuration. The pinned layer preferably has a SyAP configuration with an outer pinned layer, a Ru coupling layer, and an inner pinned layer comprised of CoFe | 07-02-2009 |
| 20130104388 | NOVEL HIGH BEVEL ANGLE MAGNETIC WRITER POLE FABRICATION PROCESS | 05-02-2013 |
