公开(公告)号：US20210375682A1

公开(公告)日：2021-12-02

申请号：US17405834

申请日：2021-08-18

Applicant: TDK CORPORATION

Inventor： Yohei SHIOKAWA ,  Tomoyuki SASAKI ,  Tomomi KAWANO ,  Minoru SANUKI

IPC: H01L21/8239 ,  G11C11/16 ,  G11C11/18 ,  H01F10/32 ,  H01L27/105 ,  H01L29/82 ,  H01L43/04 ,  H01L43/08 ,  H01L43/10

Abstract: This spin current magnetization rotational element includes a first ferromagnetic metal layer for a magnetization direction to be changed, and a spin-orbit torque wiring extending in a second direction intersecting a first direction which is an orthogonal direction to a surface of the first ferromagnetic metal layer and configured to be joined to the first ferromagnetic metal layer, wherein the spin-orbit torque wiring has a structure in which a spin conduction layer joined to the first ferromagnetic metal layer and a spin generation layer joined to the spin conduction layer on a surface on a side opposite to the first ferromagnetic metal layer are laminated.

公开(公告)号：US20210249470A1

公开(公告)日：2021-08-12

申请号：US16788419

申请日：2020-02-12

Applicant: TDK CORPORATION

Inventor： Yohei SHIOKAWA ,  Atsushi TSUMITA

IPC: H01L27/22 ,  H01L43/02 ,  H01L23/528 ,  G11C11/16

Abstract: A magnetic recording array includes: a plurality of spin elements each including a wiring and a laminated body having a first ferromagnetic layer laminated on the wiring and arranged in a matrix; a plurality of write wirings connected to first ends of the spin elements' wiring; a plurality of read wirings connected to the laminated bodies of the spin elements; a plurality of common wirings connected to second ends of the wirings of the spin elements belonging to the same column; and a control unit configured to control a write current flowing between first and second ends of each spin element, wherein when data writing is performed continuously, the unit is configured to prohibit writing to at least a spin element connected to the same common wiring as a first spin element and adjacent to the first spin element after the first element to which the current is applied.

公开(公告)号：US20210043831A1

公开(公告)日：2021-02-11

申请号：US17077165

申请日：2020-10-22

Applicant: TDK CORPORATION

Inventor： Tomoyuki SASAKI ,  Yohei SHIOKAWA

IPC: H01L43/04 ,  H01L27/22 ,  H01L43/06 ,  H01L43/10 ,  H01L43/14

Abstract: A spin-current magnetization rotational element includes a spin orbit torque wiring extending in a first direction and a first ferromagnetic layer disposed in a second direction intersecting the first direction of the spin orbit torque wiring, the spin orbit torque wiring having a first surface positioned on the side where the first ferromagnetic layer is disposed, and a second surface opposite to the first surface, and the spin orbit torque wiring has a second region on the first surface outside a first region in which the first ferromagnetic layer is disposed, the second region being recessed from the first region to the second surface side.

公开(公告)号：US20210012820A1

公开(公告)日：2021-01-14

申请号：US16921211

申请日：2020-07-06

Applicant: TDK CORPORATION

Inventor： Yohei SHIOKAWA

IPC: G11C11/16 ,  H01L43/08 ,  H01L43/10 ,  H01L43/04

Abstract: A magnetic memory includes a storage element including a first ferromagnetic layer, a first conductive layer which faces the first ferromagnetic layer in a first direction and extends in a second direction different from the first direction, and a first conductive part and a second conductive part which are connected to the first conductive layer at positions which sandwich the first ferromagnetic layer in the second direction when seen in the first direction; and a plurality of first switching elements which are electrically connected to the first conductive part of the storage element.

公开(公告)号：US20200350490A1

公开(公告)日：2020-11-05

申请号：US16935631

申请日：2020-07-22

Applicant: TDK CORPORATION

Inventor： Yohei SHIOKAWA

IPC: H01L43/04 ,  H01L43/14 ,  H01L43/06 ,  H01L43/10 ,  H01L27/22

Abstract: A spin-orbit-torque type magnetoresistance effect element includes: a first ferromagnetic layer; a second ferromagnetic layer; a non-magnetic layer which is located between the first ferromagnetic layer and the second ferromagnetic layer; and a spin-orbit-torque wiring which has the first ferromagnetic layer laminated thereon, wherein the spin-orbit-torque wiring extends in a second direction intersecting a first direction corresponding to an orthogonal direction of the first ferromagnetic layer, wherein the first ferromagnetic layer includes a first laminated structure and an interface magnetic layer in order from the spin-orbit-torque wiring, wherein the first laminated structure is a structure in which a ferromagnetic conductor layer and an inorganic compound containing layer are disposed in order from the spin-orbit-torque wiring, wherein the ferromagnetic conductor layer contains a ferromagnetic metal element, and wherein the inorganic compound containing layer contains at least one inorganic compound selected from a group consisting of carbide, nitride, and sulfide.

公开(公告)号：US20200321518A1

公开(公告)日：2020-10-08

申请号：US16956802

申请日：2019-02-26

Applicant: TDK CORPORATION

Inventor： Yohei SHIOKAWA ,  Tomoyuki SASAKI

IPC: H01L43/04 ,  H01L27/22 ,  H01L43/10

Abstract: A ferromagnetic laminated film includes a plurality of first magnetic layers, at least one second magnetic layer, and at least one first non-magnetic layer, in which the first magnetic layers are alternately laminated with the second magnetic layer or the first non-magnetic layer, and a material forming the first magnetic layers is different from a material forming the second magnetic layer, and the first magnetic layers, the first non-magnetic layer, and the second magnetic layer are a material combination in which interface magnetic anisotropy is generated between the first magnetic layer and the first non-magnetic layer, and a material combination in which interface magnetic anisotropy is generated between the first magnetic layer and the second magnetic layer.

公开(公告)号：US20190319183A1

公开(公告)日：2019-10-17

申请号：US16467157

申请日：2018-08-08

Applicant: TDK CORPORATION

Inventor： Tomoyuki SASAKI ,  Yohei SHIOKAWA

IPC: H01L43/04 ,  H01L27/22 ,  H01L43/06 ,  H01L43/10 ,  H01L43/14

Abstract: A spin-current magnetization rotational element includes a spin orbit torque wiring extending in a first direction and a first ferromagnetic layer disposed in a second direction intersecting the first direction of the spin orbit torque wiring, the spin orbit torque wiring having a first surface positioned on the side where the first ferromagnetic layer is disposed, and a second surface opposite to the first surface, and the spin orbit torque wiring has a second region on the first surface outside a first region in which the first ferromagnetic layer is disposed, the second region being recessed from the first region to the second surface side.

公开(公告)号：US20190206603A1

公开(公告)日：2019-07-04

申请号：US16227850

申请日：2018-12-20

Applicant: TDK CORPORATION

Inventor： Tomoyuki SASAKI ,  Yohei SHIOKAWA

IPC: H01F10/32 ,  G11C11/16 ,  G11C11/18 ,  H01L43/04 ,  H01L43/14

CPC classification number: H01F10/3286 ,  G11C11/161 ,  G11C11/18 ,  H01L43/04 ,  H01L43/14

Abstract: The spin-orbit torque magnetization rotational element includes a spin-orbit torque wiring layer which extends in an X direction and a first ferromagnetic layer which is laminated on the spin-orbit torque wiring layer. The first ferromagnetic layer has shape anisotropy and has a major axis in the X direction. An easy axis of magnetization of the first ferromagnetic layer is inclined with respect to the X direction and a Y direction orthogonal to the X direction on a plane in which the spin-orbit torque wiring layer extends.

公开(公告)号：US20190067563A1

公开(公告)日：2019-02-28

申请号：US16055589

申请日：2018-08-06

Applicant: TDK CORPORATION

Inventor： Eiji KOMURA ,  Yohei SHIOKAWA

IPC: H01L43/08 ,  H01L43/04 ,  H01L43/06 ,  G01R33/09

CPC classification number: H01L43/08 ,  G01R33/093 ,  G01R33/098 ,  G11C11/161 ,  H01L43/04 ,  H01L43/06

Abstract: Provided is a spin current magnetoresistance effect element, including: a magnetoresistance effect element including a first ferromagnetic metal layer, a second ferromagnetic metal layer configured for magnetization direction to be changed, and a non-magnetic layer sandwiched between the first ferromagnetic metal layer and the second ferromagnetic metal layer; and a spin-orbit torque wiring extending in a first direction which intersects a lamination direction of the magnetoresistance effect element and joined to the second ferromagnetic metal layer, wherein, a third end portion of the non-magnetic layer is located between a first end portion of the first ferromagnetic metal layer and a second end portion of the second ferromagnetic metal layer as viewed from the lamination direction on one of side surfaces of the magnetoresistance effect element.

公开(公告)号：US20180351085A1

公开(公告)日：2018-12-06

申请号：US15778577

申请日：2016-11-25

Applicant: TDK CORPORATION

Inventor： Yohei SHIOKAWA ,  Tomoyuki SASAKI

IPC: H01L43/06 ,  H01L27/22 ,  H01L43/08 ,  H01L43/10 ,  H01L43/14

Abstract: A spin current magnetization reversal element includes: a first ferromagnetic metal layer with a changeable magnetization direction; and a spin-orbit torque wiring, wherein a first direction is perpendicular to a surface of the layer, the wiring extends in a second direction intersecting the first and is bonded to the layer, wherein the wiring material is a binary alloy represented by the formula AxB1-x, a metal carbide, or metal nitride, wherein A is selected from Al, Ti, and Pt, and B is selected from Al, Cr, Mn, Fe, Co, Ni, Y, Ru, Rh, and Ir and the material has a cubic structure with symmetry of a space group Pm-3m or Fd-3m; or A is selected from Al, Si, Ti, Y, and Ta, and B is selected from C, N, Co, Pt, Au, and Bi and the material has a cubic structure with symmetry of a space group Fm-3m.