Patent application number | Description | Published |
20080253024 | MAGNETIC HEAD AND MANUFACTURING METHOD THEREOF - A recording element supported by a slider includes a non-magnetic film and a magnetic pole film. The non-magnetic film has a depression whose inner surface is provided with an amorphous electrode film used as a plating seed film. Above the electrode film, the magnetic pole film is grown by plating. The magnetic pole film may be either an electroplated film grown on the electrode film to have a maximum crystal grain size of 20 nm or less or an electroless plated film. This decreases coercive force of the magnetic pole film. | 10-16-2008 |
20080253027 | MAGNETIC HEAD, HEAD ASSEMBLY AND MAGNETIC RECORDING / REPRODUCING APPARATUS - The present invention relates to a perpendicular recording magnetic head. A perpendicular recording element includes a main magnetic pole film for emitting a perpendicular magnetic field and is supported by a slider. The main magnetic pole film includes an electrode film and a plated film, the electrode film is an alloy film of at least one element selected from the platinum group and Ni, and the plated film is a magnetic film grown on the electrode film. | 10-16-2008 |
20080274379 | THIN FILM DEVICE WITH LEAD CONDUCTOR FILM OF INCREASED SURFACE AREA - The present invention relates to a thin-film device including a thin-film element and a lead conductor film. The thin-film element and the lead conductor film are embedded in an insulating film. The lead conductor film has a terminal area at one end thereof, is connected to the thin-film element at the other end thereof, and between the one end and the other end, has an increased surface area portion whose volume is partially occupied by an insulating material to increase surface area. As a result, there is provided a high frequency thin-film device capable of reducing loss and heat generation due to skin effect, particularly a thin-film magnetic head. | 11-06-2008 |
20080316642 | MAGNETIC HEAD AND MANUFACTURING METHOD THEREFOR - The present invention relates to a perpendicular recording magnetic head. A main magnetic pole film of a perpendicular recording element is a plated film formed on an electrode film and having a small width portion and a large width portion. The small width portion is a portion for emitting a perpendicular magnetic field from a front end thereof, while the large width portion is portion being continuous with a rear end of the small width portion and having an increased width. The electrode film is different in film thickness between beneath a portion of the plated film forming at least the front end of the small width portion and beneath a portion of the plated film forming the large width portion. | 12-25-2008 |
20090027809 | THIN-FILM MAGNETIC HEAD COMPRISING SHIELD/MAGNETIC-POLE LAYER HAVING SURFACE WITHOUT RIGHT NOR SHARP ANGLE - Provided is a thin-film magnetic head in which the concentration of magnetic flux in the shield layer and the magnetic pole layer is suppressed. The thin-film magnetic head comprises a plurality of magnetic layers that have front surfaces reaching a head end surface on the ABS side. Further in this head, at least one of the plurality of magnetic layers has a shape in which: each of edges corresponding to both side surfaces extends so as to spread obliquely rearward with each other from an end of a straight edge in a track width direction corresponding to the front surface; and the front surface reaching the head end surface has a shape in which upper and lower corner portions in each of both end portions in the track width direction form obtuse angles or rounded shapes. | 01-29-2009 |
20090128952 | MAGNETIC HEAD, HEAD ASSEMBLY AND MAGNETIC RECORDING/REPRODUCING APPARATUS - The present invention relates to a perpendicular recording magnetic head. A main magnetic pole film includes an electrode film and a plated magnetic film. The electrode film includes a Ru film and a conductive magnetic film, and the Ru film, which follows the shape of an inner wall surface of a recess formed in a first non-magnetic film, is adhered to the inner wall surface of the recess or a surface of a second non-magnetic film adhered thereto. The conductive magnetic film is adhered to a surface of the Ru film, thereby following the shape of the inner wall surface of the recess. The plated magnetic film is disposed adjacent the conductive magnetic film, thereby filling up the recess. | 05-21-2009 |
20110310512 | THIN FILM MAGNETIC HEAD AND MAGNETIC DISK DEVICE - A thin film magnetic head has a plurality of electrode terminals formed on substantially the same surface as the head formation surface on which magnetic head element is laminated. The plurality of electrode terminals is arranged in an array near and along the second side of the head formation surface that is opposite the first side on the ABS side, from which the functional end of the magnetic head is exposed. The plurality of electrode terminals is formed to include a pad and a protrusion formed along a part of the periphery of the pad. | 12-22-2011 |
20140160597 | MAGNETIC HEAD FOR PERPENDICULAR MAGNETIC RECORDING HAVING A WRITE SHIELD - A magnetic head includes a main pole, a write shield, and a return path section. The write shield includes first and second shield portions located on opposite sides of the main pole in the track width direction. The return path section includes first and second yoke portions located on opposite sides of the main pole in the track width direction. The first yoke portion is connected to the first shield portion. The second yoke portion is connected to the second shield portion. A coil surrounds at least part of the entire outer periphery of the main pole when viewed from a medium facing surface. | 06-12-2014 |