公开(公告)号：US20210098690A1

公开(公告)日：2021-04-01

申请号：US17039244

申请日：2020-09-30

Applicant: TDK CORPORATION

Inventor： Takuya ASHIDA ,  Tatsuo SHIBATA

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

Abstract: A magnetic domain wall movement element includes a wiring layer containing a ferromagnetic material, a non-magnetic layer in contact with the first surface of the wiring layer, a first conductive layer connected to the first surface of the wiring layer and containing a ferromagnetic material; and a second conductive layer connected to the wiring layer at a distance from the first conductive layer. A first part of the connection face of the first conductive layer is directly connected to the wiring layer, and a second part of the connection face other than the first part is connected to the wiring layer via the non-magnetic layer.

公开(公告)号：US20250113740A1

公开(公告)日：2025-04-03

申请号：US18729008

申请日：2022-02-25

Applicant: TDK CORPORATION

Inventor： Takuya ASHIDA ,  Tomoyuki SASAKI

IPC: H10N50/10 ,  G11C11/16 ,  H10N50/85

Abstract: This magnetized rotary element includes a spin-orbit torque wiring and a first ferromagnetic layer connected to the spin-orbit torque wiring, wherein the spin-orbit torque wiring includes a topological insulator in which electrical conductors are dispersed.

公开(公告)号：US20210376229A1

公开(公告)日：2021-12-02

申请号：US17331211

申请日：2021-05-26

Applicant: TDK CORPORATION

Inventor： Takuya ASHIDA ,  Tatsuo SHIBATA

IPC: H01L43/02 ,  H01L27/22

Abstract: A magnetic domain wall movement element according to the present embodiment includes a first ferromagnetic layer, a nonmagnetic layer, and a second ferromagnetic layer that are laminated in an order from a side close to a substrate. On a cross-section along a lamination direction and a second direction orthogonal to a first direction in which the first ferromagnetic layer extends in a plan view from the lamination direction, a shortest width of the first ferromagnetic layer in the second direction is shorter than a width of the nonmagnetic layer in the second direction.

公开(公告)号：US20220359817A1

公开(公告)日：2022-11-10

申请号：US17623540

申请日：2020-07-03

Applicant: TDK CORPORATION

Inventor： Takuya ASHIDA ,  Tatsuo SHIBATA

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

Abstract: A magnetic element according to an embodiment includes a wiring layer extending in a first direction and including a ferromagnetic material and a nonmagnetic layer laminated on the wiring layer in a second direction. The wiring layer includes a side surface inclined with respect to the second direction in a cross section orthogonal to the first direction. The side surface has one or more bending points at which an inclination angle with respect to the second direction becomes discontinuous. An inclination angle of a first inclined surface far from the nonmagnetic layer is smaller than an inclination angle of a second inclined surface close to the nonmagnetic layer in a state in which a first bending point at a position farthest from the nonmagnetic layer among the bending points is interposed between the inclination angles.

公开(公告)号：US20220231084A1

公开(公告)日：2022-07-21

申请号：US17610339

申请日：2020-05-12

Applicant: TDK CORPORATION

Inventor： Tetsuhito SHINOHARA ,  Takuya ASHIDA ,  Tatsuo SHIBATA

IPC: H01L27/22 ,  H01L43/02 ,  H01L43/10 ,  G11C11/16

Abstract: A magnetic domain wall moving element includes a magnetic recording layer which extends in a first direction and includes a ferromagnetic material, and a first conductive layer and a second conductive layer which are separately connected to the magnetic recording layer, the first conductive layer includes a ferromagnetic first layer in contact with the magnetic recording layer, the first layer includes a mixing layer at an interface with the magnetic recording layer, a ferromagnetic material and a dissimilar metal are mixed in the mixing layer, and the dissimilar metal is a metal different from each of the ferromagnetic material that mainly constitutes the first layer and the ferromagnetic material that mainly constitutes the magnetic recording layer.

公开(公告)号：US20200258559A1

公开(公告)日：2020-08-13

申请号：US16859096

申请日：2020-04-27

Applicant: TDK CORPORATION

Inventor： Takuya ASHIDA ,  Tatsuo SHIBATA

IPC: G11C11/16 ,  H01L43/02 ,  H01L27/22 ,  H01F10/32

Abstract: A magnetic recording array includes: a plurality of domain wall moving elements; a first wiring which is electrically connected to a reference potential and is electrically connected to at least one domain wall moving element of the plurality of domain wall moving elements; a second wiring which is electrically connected to at least two or more domain wall moving elements of the plurality of domain wall moving elements; a first switching element which is connected between each of the domain wall moving elements and the first wiring; and a second switching element which is connected between each of the domain wall moving elements and the second wiring, wherein an OFF resistance of the first switching element is smaller than an OFF resistance of the second switching element.

公开(公告)号：US20200273511A1

公开(公告)日：2020-08-27

申请号：US16795876

申请日：2020-02-20

Applicant: TDK CORPORATION

Inventor： Takuya ASHIDA ,  Tomoyuki SASAKI ,  Tatsuo SHIBATA

IPC: G11C11/16 ,  G11C11/15 ,  H01L27/22

Abstract: A magnetic domain wall movement element includes a first ferromagnetic layer, a magnetic recording layer, a nonmagnetic layer, a first electrode, and a second electrode. The magnetic recording layer includes: a first region which overlaps with the first electrode and the first ferromagnetic layer in a first direction; a second region which overlaps with the second electrode and the first ferromagnetic layer in the first direction; and a third region which is located between the first region and the second region. An area of a first section in the first region facing the first electrode is larger than an area of a second section in the second region facing the second electrode. The first ferromagnetic layer overlaps with a part of the first electrode and a part of the second electrode in the first direction.

公开(公告)号：US20200265875A1

公开(公告)日：2020-08-20

申请号：US16866655

申请日：2020-05-05

Applicant: TDK CORPORATION

Inventor： Takuya ASHIDA ,  Tatsuo SHIBATA

IPC: G11C5/08 ,  H01L27/22 ,  H01L43/10 ,  H01L43/08 ,  G11C11/16

Abstract: A magnetic recording array includes: a plurality of domain wall moving elements; a first wiring which is electrically connected to a reference potential and is electrically connected to at least one domain wall moving element of the plurality of domain wall moving elements; a second wiring which is electrically connected to at least two or more domain wall moving elements of the plurality of domain wall moving elements; a first switching element which is connected between each of the domain wall moving elements and the first wiring; and a second switching element which is connected between each of the domain wall moving elements and the second wiring, wherein an OFF resistance of the first switching element is smaller than an OFF resistance of the second switching element.

公开(公告)号：US20200105310A1

公开(公告)日：2020-04-02

申请号：US16292959

申请日：2019-03-05

Applicant: TDK CORPORATION

Inventor： Takuya ASHIDA ,  Tatsuo SHIBATA

IPC: G11C5/08 ,  G11C11/16 ,  H01L27/22 ,  H01L43/08 ,  H01L43/10

Abstract: A magnetic recording array includes: a plurality of domain wall moving elements; a first wiring which is electrically connected to a reference potential and is electrically connected to at least one domain wall moving element of the plurality of domain wall moving elements; a second wiring which is electrically connected to at least two or more domain wall moving elements of the plurality of domain wall moving elements; a first switching element which is connected between each of the domain wall moving elements and the first wiring; and a second switching element which is connected between each of the domain wall moving elements and the second wiring, wherein an OFF resistance of the first switching element is smaller than an OFF resistance of the second switching element.