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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
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.
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2.发明申请公开(公告)号：US20200312392A1
公开(公告)日：2020-10-01
申请号：US16829188
申请日：2020-03-25
Applicant: TDK CORPORATION
Inventor： Atsushi TSUMITA , Yohei SHIOKAWA , Eiji KOMURA
IPC: G11C11/16 , H01L43/10 , H01L43/12 , H01L43/08 , H01L27/11597
Abstract: A storage element includes a first ferromagnetic layer; a second ferromagnetic layer; a nonmagnetic layer that is sandwiched between the first ferromagnetic layer and the second ferromagnetic layer in a first direction; a first wiring which extends in a second direction different from the first direction, and the first wiring being configured to sandwich the first ferromagnetic layer with the nonmagnetic layer in the first direction; an electrode which sandwiches the second ferromagnetic layer at least partially with the nonmagnetic layer in the first direction; and a compound part which is positioned inside the electrode and has a lower thermal conductivity than the electrode.
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3.发明申请公开(公告)号：US20200072664A1
公开(公告)日：2020-03-05
申请号：US16550371
申请日：2019-08-26
Applicant: TDK CORPORATION
Inventor： Naoki OHTA , Yuji KAKINUMA , Shinji HARA , Susumu AOKI , Keita KAWAMORI , Eiji KOMURA
Abstract: A resistive element array circuit includes word lines, bit lines, resistive elements, a selector, a differential amplifier, and a ground terminal. The word lines are coupled to a power supply. The resistive elements are each disposed at an intersection of corresponding one of the word lines and corresponding one of the bit lines. The selector is configured to select one word line and one bit line. The differential amplifier includes a positive input terminal configured to be coupled to the selected one of the bit lines which is selected by the selector, a negative input terminal configured to be coupled to non-selected one of the bit lines which is not selected by the selector and to non-selected one of the word lines which is not selected by the selector, an output terminal being coupled to the negative input terminal. The ground terminal is coupled to the positive input terminal.
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4.发明申请公开(公告)号：US20190148629A1
公开(公告)日：2019-05-16
申请号：US16178082
申请日：2018-11-01
Applicant: TDK CORPORATION
Inventor： Tomoyuki SASAKI , Yohei SHIOKAWA , Eiji KOMURA , Keita SUDA
Abstract: Provided is a spin-orbit-torque magnetization rotational element that suppresses re-adhesion of impurities during preparation and allows a write current to easily flow. The spin-orbit-torque magnetization rotational element includes a spin-orbit torque wiring that extends in a first direction, and a first ferromagnetic layer that is located on a side of one surface of the spin-orbit torque wiring. A side surface of the spin-orbit torque wiring and a side surface of the first ferromagnetic layer form a continuous inclined surface in any side surface.
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5.发明申请THERMALLY ASSISTED RECORDING HEAD UTILIZING LASER LIGHT WITH LIMITED WAVELENGTH RANGE 有权用有限波长范围的热辅助记录头使用激光公开(公告)号：US20140269233A1
公开(公告)日：2014-09-18
申请号：US13830910
申请日：2013-03-14
Applicant: TDK Corporation
Inventor： Shinji HARA , Tsutomu CHOU , Koji SHIMAZAWA , Eiji KOMURA , Seiichi TAKAYAMA , Yasuhiro ITO
IPC: G11B13/04
CPC classification number: G11B5/314 , G11B5/6088 , G11B2005/0021
Abstract: A thermally assisted magnetic recording head includes core that propagates laser light as propagation light, a near-field light generator that faces a portion of the core and extends to an air bearing surface (ABS), the near-field light generator coupled to the propagation light propagating through the core so as to generate a surface plasmon, propagating the surface plasmon to an end part facing the ABS, and generating near-field light at the end part to irradiate the near-field light to a magnetic recording medium, a main magnetic pole layer provided in the vicinity of the near-field light generator where an end part is positioned on the ABS, a laser diode that generates laser light of wavelength 890 nm to 1,000 nm and enters the laser light into the core, and a photodiode provided on a silicon substrate measures an intensity of the laser light entering from the laser diode to the core.
Abstract translation: 热辅助磁记录头包括将激光作为传播光传播的芯，近场光发生器，其面对芯的一部分并延伸到空气轴承表面（ABS），近场光发生器耦合到传播 光传播通过芯，以产生表面等离子体，将表面等离子体传播到面向ABS的端部，并在端部产生近场光，以将近场光照射到磁记录介质，主 设置在近场光发生器附近的磁极层，端部位于ABS上;激光二极管，其生成波长为890nm至1000nm的激光并将激光进入芯中;以及光电二极管 设置在硅衬底上测量从激光二极管进入芯的激光的强度。
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Patent Agency Ranking
公开(公告)号：US20220178758A1
公开(公告)日：2022-06-09
申请号：US17539976
申请日：2021-12-01
Applicant: TDK CORPORATION
Inventor： Shinji HARA , Naoki OHTA , Susumu AOKI , Eiji KOMURA , Maiko SHIROKAWA
IPC: G01J5/20
Abstract: An electromagnetic wave sensor includes a substrate having transmittance of electromagnetic waves having a specific wavelength, an insulator layer provided on one surface side of the substrate, a thermistor film disposed to have a space between the thermistor film and one surface of the substrate, and a wiring part provided inside or on a surface of the insulator layer and electrically connected to the thermistor film, wherein a transmittance of the electromagnetic waves at a portion facing the thermistor film is relatively higher than a transmittance of the electromagnetic waves at a portion where the wiring part is provided in a layer in which the insulator layer is provided.
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公开(公告)号：US20220006006A1
公开(公告)日：2022-01-06
申请号：US17478475
申请日：2021-09-17
Applicant: TDK CORPORATION
Inventor： Eiji KOMURA , Tomoyuki SASAKI
Abstract: A spin current magnetization rotational magnetoresistance effect element includes a magnetoresistance effect element including a first ferromagnetic metal layer in which a direction of magnetization is fixed, a second ferromagnetic metal layer configured for a direction of magnetization to be changed, and a nonmagnetic layer provided between the first ferromagnetic metal layer and the second ferromagnetic metal layer and a spin-orbit torque wiring extending in a first direction intersecting a lamination direction of the magnetoresistance effect element and joined to the second ferromagnetic metal layer. Furthermore, in the spin current magnetization rotational magnetoresistance effect element, the spin-orbit torque wiring containing a pure spin current generation part made of a material that generates a pure spin current and a low resistance part made of a material having electric resistance lower than electrical resistance of the pure spin current generation part.
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公开(公告)号：US20210265560A1
公开(公告)日：2021-08-26
申请号：US17137565
申请日：2020-12-30
Applicant: TDK CORPORATION
Inventor： Eiji KOMURA , Yohei SHIOKAWA
Abstract: This magnetization rotational element includes a spin injection region that extends in a first direction, a first ferromagnetic layer that is laminated on the spin injection region, and a metal region that is adjacent to the spin injection region with an insulator interposed therebetween in a second direction orthogonal to the first direction in a plan view in a lamination direction.
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9.发明申请公开(公告)号：US20200235290A1
公开(公告)日：2020-07-23
申请号：US16844249
申请日：2020-04-09
Applicant: TDK CORPORATION
Inventor： Tomoyuki SASAKI , Yohei SHIOKAWA , Eiji KOMURA , Keita SUDA
Abstract: Provided is a spin-orbit-torque magnetization rotational element that suppresses re-adhesion of impurities during preparation and allows a write current to easily flow. The spin-orbit-torque magnetization rotational element includes a spin-orbit torque wiring that extends in a first direction, and a first ferromagnetic layer that is located on a side of one surface of the spin-orbit torque wiring. A side surface of the spin-orbit torque wiring and a side surface of the first ferromagnetic layer form a continuous inclined surface in any side surface.
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公开(公告)号：US20190267542A1
公开(公告)日：2019-08-29
申请号：US16282884
申请日：2019-02-22
Applicant: TDK CORPORATION
Inventor： Eiji KOMURA , Yohei SHIOKAWA
Abstract: A spin-orbit-torque magnetization rotational element includes: a spin-orbit-torque wiring which extends in a first direction; and a first ferromagnetic layer which is laminated in a second direction intersecting the spin-orbit-torque wiring, wherein the spin-orbit-torque wiring includes a convex portion which protrudes in the second direction in relation to a first surface on the side of the first ferromagnetic layer at a connecting part between the spin-orbit-torque wiring and the first ferromagnetic layer.
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