Patent classifications
G11C11/161
Magnetoresistance effect element, circuit device, and circuit unit
There is provided a magnetoresistance effect element includes: a channel layer that extends in a first direction; a recording layer which includes a film formed from a ferromagnetic material, of which a magnetization state is changed to one of two or greater magnetization states, and which is formed on the channel layer; a non-magnetic layer that is provided on a surface of the recording layer; a reference layer which is provided on a surface of the non-magnetic layer, which includes a film formed from a ferromagnetic material, and of which a magnetization direction is fixed; a terminal pair that includes a first terminal and a second terminal which are electrically connected to the channel layer with an interval in the first direction, and to which a current pulse for bringing the recording layer to any one magnetization state with a plurality of pulses is input by flowing a current to the channel layer between the first terminal and the second terminal; and a third terminal that is electrically connected to the reference layer.
Semiconductor device having first memory section and second memory section
Disclosed is a semiconductor device including first conductive lines, second conductive lines crossing the first conductive lines, and memory cells at intersections between the first conductive lines and the second conductive lines. Each of the memory cells includes a magnetic tunnel junction pattern, a bi-directional switching pattern connected in series to the magnetic tunnel junction pattern, and a conductive pattern between the magnetic tunnel junction pattern and the bi-directional switching pattern.
Transition metal dichalcogenide based spin orbit torque memory device with magnetic insulator
A memory apparatus is provided which comprises: a stack comprising a magnetic insulating material and a transition metal dichalcogenide (TMD), wherein the magnetic insulating material has a first magnetization. The stack behaves as a free magnet. The apparatus includes a fixed magnet with a second magnetization. An interconnect is further provided which comprises a spin orbit material, wherein the interconnect is adjacent to the stack.
PERPENDICULAR MTJ ELEMENT HAVING A CUBE-TEXTURED REFERENCE LAYER AND METHODS OF MAKING THE SAME
The invention comprises a method of forming a novel magnetic pinning structure having a (100) textured or cube-textured reference layer through a non-epitaxial texturing approach so that an excellent coherent tunneling effect is achieved in a pMTJ element due to its texture structure of CoFe BCC (100)/MgO rocksalt (100)/CoFe BCC (100). Correspondingly, a high MR ratio and a high pinning strength on the reference layer can be achieved for perpendicular spin-transfer-torque magnetic-random-access memory (pSTT-MRAM) using perpendicular magnetoresistive elements as basic memory cells which potentially replace the conventional semiconductor memory used in electronic chips, especially mobile chips for power saving and non-volatility.
Memory element, memory apparatus
A memory element including a layered structure including a memory layer having magnetization perpendicular to a film face in which a direction of the magnetization is changed depending on information stored therein, a magnetization-fixed layer having magnetization perpendicular to the film face, which becomes a base of the information stored in the memory layer, and an intermediate layer that is formed of a non-magnetic material and is provided between the memory layer and the magnetization-fixed layer.
Weyl semimetal material for magnetic tunnel junction
In some examples, a device includes a magnetic tunnel junction including a first Weyl semimetal layer, a second Weyl semimetal layer, and a dielectric layer positioned between the first and second Weyl semimetal layers. The magnetic tunnel junction may have a large tunnel magnetoresistance ratio, which may be greater than five hundred percent or even greater than one thousand percent.
Magnetic tunnel junction structure and integration schemes
A memory device is provided, the memory device comprising a contact pillar in a dielectric layer. A magnetic tunnel junction may be provided over the contact pillar. A barrier layer may be provided on a sidewall of the magnetic tunnel junction and extending over a horizontal surface of the dielectric layer. A spacer may be provided over the barrier layer.
MEMORY ELEMENT AND MEMORY DEVICE
There is disclosed a memory element including a memory layer that has a magnetization perpendicular to a film face; a magnetization-fixed layer that has a magnetization that is perpendicular to the film face; and an insulating layer that is provided between the memory layer and the magnetization-fixed layer, wherein an electron that is spin-polarized is injected in a lamination direction of a layered structure, and thereby the magnetization direction of the memory layer varies and a recording of information is performed, a magnitude of an effective diamagnetic field which the memory layer receives is smaller than a saturated magnetization amount of the memory layer, and in regard to the insulating layer and the other side layer with which the memory layer comes into contact at a side opposite to the insulating layer, at least an interface that comes into contact with the memory layer is formed of an oxide film.
MLU BASED MAGNETIC SENSOR HAVING IMPROVED PROGRAMMABILITY AND SENSITIVITY
A magnetic sensor device for sensing an external magnetic field includes a plurality of MLU cells, each MLU cell having a magnetic tunnel junction including a sense layer having a sense magnetization freely orientable in the external magnetic field, a storage layer having a storage magnetization; and a tunnel barrier layer between the sense layer and the storage layer. The magnetic sensor device includes a stress inducing device configured for applying an anisotropic mechanical stress on the magnetic tunnel junction such as to induce a stress-induced magnetic anisotropy on at least one of the sense layer and the storage layer. The stress-induced magnetic anisotropy induced by the stress inducing device corresponds substantially to a net magnetic anisotropy of the at least one of the sense layer and the storage layer. The magnetic sensor device can be programmed easily and has improved sensitivity.
MAGNETIC MEMORY SLOT
A memory slot including a pad formed of a stack of regions made of thin layers, including a first region made of a nonmagnetic conducting material; a second region made of a magnetic material exhibiting a magnetization in a direction perpendicular to the principal plane of the pad; a third region made of a nonmagnetic conducting material of different characteristics to those of the first region; the pad resting on a conducting track adapted to cause the flow of a programming current of chosen sense, in which the pad has an asymmetric shape with respect to any plane perpendicular to the plane of the layers and parallel to the central axis of the track, and with respect to its barycenter.