Patent application number | Description | Published |
20130336045 | SPIN TRANSFER TORQUE MEMORY (STTM) DEVICE WITH HALF-METAL AND METHOD TO WRITE AND READ THE DEVICE - Spin transfer torque memory (STTM) devices with half-metals and methods to write and read the devices are described. For example, a magnetic tunneling junction includes a free magnetic layer, a fixed magnetic layer, and a dielectric layer disposed between the free magnetic layer and the fixed magnetic layer. One or both of the free magnetic layer and the fixed magnetic layer includes a half-metal material at an interface with the dielectric layer. | 12-19-2013 |
20140084398 | PERPENDICULAR MTJ STACKS WITH MAGNETIC ANISOTROPY ENHANCING LAYER AND CRYSTALLIZATION BARRIER LAYER - Magnetic tunnel junctions (MTJ) suitable for spin transfer torque memory (STTM) devices, include perpendicular magnetic layers and one or more anisotropy enhancing layer(s) separated from a free magnetic layer by a crystallization barrier layer. In embodiments, an anisotropy enhancing layer improves perpendicular orientation of the free magnetic layer while the crystallization barrier improves tunnel magnetoresistance (TMR) ratio with better alignment of crystalline texture of the free magnetic layer with that of a tunneling layer. | 03-27-2014 |
20140117476 | BALANCING ENERGY BARRIER BETWEEN STATES IN PERPENDICULAR MAGNETIC TUNNEL JUNCTIONS - Techniques are disclosed for enhancing performance of a perpendicular magnetic tunnel junction (MTJ) by implementing an additional ferromagnetic layer therein. The additional ferromagnetic layer can be implemented, for example, in or otherwise proximate either the fixed ferromagnetic layer or the free ferromagnetic layer of the perpendicular MTJ. In some embodiments, the additional ferromagnetic layer is implemented with a non-magnetic spacer, wherein the thickness of the additional ferromagnetic layer and/or spacer can be adjusted to sufficiently balance the energy barrier between parallel and anti-parallel states of the perpendicular MTJ. In some embodiments, the additional ferromagnetic layer is configured such that its magnetization is opposite that of the fixed ferromagnetic layer. | 05-01-2014 |
20140167191 | METHOD FOR REDUCING SIZE AND CENTER POSITIONING OF MAGNETIC MEMORY ELEMENT CONTACTS - A method of centering a contact on a layer of a magnetic memory device. In one embodiment, a spacers is formed in an opening surrounding the upper layer and the contact is formed within the spacer. The spacer is formed from an anisotropically etched conformal layer deposited on an upper surface and into the opening. | 06-19-2014 |
20140175575 | PERPENDICULAR SPIN TRANSFER TORQUE MEMORY (STTM) DEVICE WITH ENHANCED STABILITY AND METHOD TO FORM SAME - Perpendicular spin transfer torque memory (STTM) devices with enhanced stability and methods of fabricating perpendicular STTM devices with enhanced stability are described. For example, a material layer stack for a magnetic tunneling junction includes a fixed magnetic layer. A dielectric layer is disposed above the fixed magnetic layer. A free magnetic layer is disposed above the dielectric layer. A conductive oxide material layer is disposed on the free magnetic layer. | 06-26-2014 |
20140177326 | ELECTRIC FIELD ENHANCED SPIN TRANSFER TORQUE MEMORY (STTM) DEVICE - Spin transfer torque memory (STTM) devices incorporating a field plate for application of an electric field to reduce a critical current required for transfer torque induced magnetization switching. Embodiments utilize not only current-induced magnetic filed or spin transfer torque, but also electric field induced manipulation of magnetic dipole orientation to set states in a magnetic device element (e.g., to write to a memory element). An electric field generated by a voltage differential between an MTJ electrode and the field plate applies an electric field to a free magnetic layer of a magnetic tunneling junction (MTJ) to modulate one or more magnetic properties over at least a portion of the free magnetic layer. | 06-26-2014 |
20140204661 | MEMORY WITH ELEMENTS HAVING TWO STACKED MAGNETIC TUNNELING JUNCTION (MTJ) DEVICES - A magnetic memory having memory elements each with two magnetic tunneling junction (MTJ) devices is disclosed. The devices in each element are differentially programmed with complementary data. The devices for each element are stacked one above the other so that the element requires no more substrate area than a single MTJ device. | 07-24-2014 |
20140291663 | HIGH STABILITY SPINTRONIC MEMORY - An embodiment includes a magnetic tunnel junction (MTJ) including a free magnetic layer, a fixed magnetic layer, and a tunnel barrier between the free and fixed layers; the tunnel barrier directly contacting a first side of the free layer; and an oxide layer directly contacting a second side of the free layer; wherein the tunnel barrier includes an oxide and has a first resistance-area (RA) product and the oxide layer has a second RA product that is lower than the first RA product. The MTJ may be included in a perpendicular spin torque transfer memory. The tunnel barrier and oxide layer form a memory having high stability with an RA product not substantively higher than a less table memory having a MTJ with only a single oxide layer. Other embodiments are described herein. | 10-02-2014 |
20140308760 | PERPENDICULAR SPIN TRANSFER TORQUE MEMORY (STTM) DEVICE WITH ENHANCED STABILITY AND METHOD TO FORM SAME - Perpendicular spin transfer torque memory (STTM) devices with enhanced stability and methods of fabricating perpendicular STTM devices with enhanced stability are described. For example, a material layer stack for a magnetic tunneling junction includes a fixed magnetic layer. A dielectric layer is disposed above the fixed magnetic layer. A free magnetic layer is disposed above the dielectric layer. A conductive oxide material layer is disposed on the free magnetic layer. | 10-16-2014 |
20140349415 | PERPENDICULAR MTJ STACKS WITH MAGNETIC ANISOTROPY ENHANCING LAYER AND CRYSTALLIZATION BARRIER LAYER - Magnetic tunnel junctions (MTJ) suitable for spin transfer torque memory (STTM) devices, include perpendicular magnetic layers and one or more anisotropy enhancing layer(s) separated from a free magnetic layer by a crystallization barrier layer. In embodiments, an anisotropy enhancing layer improves perpendicular orientation of the free magnetic layer while the crystallization barrier improves tunnel magnetoresistance (TMR) ratio with better alignment of crystalline texture of the free magnetic layer with that of a tunneling layer. | 11-27-2014 |