公开(公告)号：US20230389444A1

公开(公告)日：2023-11-30

申请号：US17971775

申请日：2022-10-24

Applicant: TDK CORPORATION

Inventor： Tomoyuki SASAKI ,  Zhenyao TANG

IPC: H01L43/02 ,  H01L27/22 ,  H01L43/10 ,  H01L43/12

CPC classification number: H01L43/02 ,  H01L27/228 ,  H01L43/10 ,  H01L43/12

Abstract: A magneto-resistive element includes a first ferromagnetic layer, a second ferromagnetic layer, and a non-magnetic layer. The non-magnetic layer is located between the first ferromagnetic layer and the second ferromagnetic layer. The non-magnetic layer includes a first central region, and a first outer circumferential region disposed on an outer side of the first central region. A maximum thickness of the first outer circumferential region is greater than an average thickness of the first central region.

公开(公告)号：US20210050266A1

公开(公告)日：2021-02-18

申请号：US17089194

申请日：2020-11-04

Applicant: TDK CORPORATION

Inventor： Zhenyao TANG ,  Tomoyuki SASAKI

IPC: H01L21/8239 ,  G01R33/09 ,  H01L27/105 ,  H01L27/22 ,  H01L43/08 ,  H01L43/10

Abstract: A TMR element includes a magnetic tunnel junction, a side wall portion that covers a side surface of the magnetic tunnel junction, and a minute particle region that is disposed in the side wall portion. The side wall portion includes an insulation material. The minute particle region includes the insulation material and a plurality of minute magnetic metal particles that are dispersed in the insulation material. The minute particle region is electrically connected in parallel with the magnetic tunnel junction.

公开(公告)号：US20230397505A1

公开(公告)日：2023-12-07

申请号：US18237014

申请日：2023-08-23

Applicant: TDK CORPORATION

Inventor： Zhenyao TANG ,  Yohei SHIOKAWA ,  Tomoyuki SASAKI

IPC: H10N52/80 ,  H10B61/00 ,  H10N50/85 ,  H10N52/00 ,  H10N52/01

CPC classification number: H10N52/80 ,  H10B61/22 ,  H10N52/01 ,  H10N52/00 ,  H10N50/85

Abstract: A magnetic device includes a stacked body including a first ferromagnetic layer, a second ferromagnetic layer, and a non-magnetic layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; a first insulating layer which covers side surfaces of the stacked body; and a radiator located outside the first insulating layer with respect to the stacked body, in which a distance between the stacked body and the radiator differs depending on a position of the stacked body in a stacking direction.

公开(公告)号：US20230131758A1

公开(公告)日：2023-04-27

申请号：US17509834

申请日：2021-10-25

Applicant: TDK CORPORATION

Inventor： Zhenyao TANG

IPC: G11B5/31 ,  G11B5/127

Abstract: This magnetic recording head includes a main magnetic pole, a write shield, and an oscillation element. The oscillation element has a first oscillation portion, a second oscillation portion, and a non-magnetic conductive layer provided therebetween. The oscillation element has a first current path connecting the main magnetic pole and the non-magnetic conductive layer to each other, and a second current path connecting the write shield and the non-magnetic conductive layer to each other.

公开(公告)号：US20230068442A1

公开(公告)日：2023-03-02

申请号：US17851858

申请日：2022-06-28

Applicant: TDK CORPORATION

Inventor： Zhenyao TANG ,  Tomoyuki SASAKI

IPC: H01L43/02 ,  H01L27/22

Abstract: A magneto resistive element includes a laminate that includes a first ferromagnetic layer, a second ferromagnetic layer, and a non-magnetic layer located between the first ferromagnetic layer and the second ferromagnetic layer; a first conductive layer that is connected to a first surface of the laminate in a lamination direction; and a second conductive layer that is connected to a second surface opposite the first surface. The first surface of the laminate includes a first region which comes into contact with the first conductive layer and a second region which does not come into contact with the first conductive layer.

公开(公告)号：US20220277877A1

公开(公告)日：2022-09-01

申请号：US17188511

申请日：2021-03-01

Applicant: TDK CORPORATION

Inventor： Zhenyao TANG ,  Yohei SHIOKAWA ,  Tomoyuki SASAKI

IPC: H01F10/32

Abstract: A magnetic device is equipped with a stacked body including a first ferromagnetic layer, a second ferromagnetic layer, and a non-magnetic layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; and an insulator which covers at least a part of side surfaces of the stacked body, in which the insulator has a space outside the side surface of the stacked body.

公开(公告)号：US20220254992A1

公开(公告)日：2022-08-11

申请号：US17171623

申请日：2021-02-09

Applicant: TDK CORPORATION

Inventor： Zhenyao TANG ,  Yohei SHIOKAWA ,  Tomoyuki SASAKI

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

Abstract: A magnetic device includes a stacked body including a first ferromagnetic layer, a second ferromagnetic layer, and a non-magnetic layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; a first insulating layer which covers side surfaces of the stacked body; and a radiator located outside the first insulating layer with respect to the stacked body, in which a distance between the stacked body and the radiator differs depending on a position of the stacked body in a stacking direction.

公开(公告)号：US20170309299A1

公开(公告)日：2017-10-26

申请号：US15138486

申请日：2016-04-26

Applicant: TDK Corporation

Inventor： Zhenyao TANG ,  Tetsuya ROPPONGI ,  Yoshikazu SOENO ,  Hironobu MATSUZAWA ,  Hirokazu TAKAHASHI

IPC: G11B5/127 ,  G11B5/235 ,  G11B5/31 ,  G11B5/00

CPC classification number: G11B5/1278 ,  G11B5/235 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/3146 ,  G11B2005/0024

Abstract: A microwave assisted magnetic head includes a main magnetic pole; a trailing shield; and a spin torque oscillator provided between the main magnetic pole and the trailing shield. The spin torque oscillator has a first end surface configuring a part of an air bearing surface, a second end surface facing the main magnetic pole, and a third end surface facing the first end surface, the first angle θ1 made by the first end surface and the second end surface is smaller than the second angle θ2 formed by the second end surface and the third end surface, and the second angle θ2 is 80 to 100 degrees.

公开(公告)号：US20250098547A1

公开(公告)日：2025-03-20

申请号：US18470708

申请日：2023-09-20

Applicant: TDK CORPORATION

Inventor： Shuji OKAME ,  Tomoyuki SASAKI ,  Zhenyao TANG

IPC: H10N50/20 ,  H10B61/00 ,  H10N50/85

Abstract: The magnetic memory of the present disclosure comprises a plurality of magnetoresistive effect elements. Each of the magnetoresistive effect elements comprises a reference layer, a magnetization free layer, a tunnel barrier layer provided between the reference layer and the magnetization free layer, a first cap layer provided on the magnetization free layer, a second cap layer; and a ferromagnetic layer provided between the first cap layer and the second cap layer. The ferromagnetic layer has a thickness less than a thickness of the magnetization free layer.

公开(公告)号：US20230125878A1

公开(公告)日：2023-04-27

申请号：US17894449

申请日：2022-08-24

Applicant: TDK CORPORATION

Inventor： Zhenyao TANG

IPC: G11B5/11

Abstract: This magnetic recording head includes a main magnetic pole, a write shield, and an element. The element has a first portion, a second portion, and a non-magnetic conductive layer disposed therebetween. The element has a first current path connecting the main magnetic pole and the non-magnetic conductive layer to each other, and a second current path connecting the write shield and the non-magnetic conductive layer to each other.