Patents by Inventor Kazuhiro Bessho

Kazuhiro Bessho has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240005975
    Abstract: A storage element includes a layer structure including a storage layer having a direction of magnetization which changes according to information, a magnetization fixed layer having a fixed direction of magnetization, and an intermediate layer disposed therebetween, which intermediate layer contains a nonmagnetic material. The magnetization fixed layer has at least two ferromagnetic layers having a direction of magnetization tilted from a direction perpendicular to a film surface, which are laminated and magnetically coupled interposing a coupling layer therebetween. This configuration may effectively prevent divergence of magnetization reversal time due to directions of magnetization of the storage layer and the magnetization fixed layer being substantially parallel or antiparallel, reduce write errors, and enable writing operation in a short time.
    Type: Application
    Filed: August 29, 2023
    Publication date: January 4, 2024
    Inventors: Yutaka Higo, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Tetsuya Asayama, Kazutaka Yamane, Hiroyuki Uchida
  • Patent number: 11839163
    Abstract: A storage element including a storage layer configured to hold information by use of a magnetization state of a magnetic material, with a pinned magnetization layer being provided on one side of the storage layer, with a tunnel insulation layer, and with the direction of magnetization of the storage layer being changed through injection of spin polarized electrons by passing a current in the lamination direction, so as to record information in the storage layer, wherein a spin barrier layer configured to restrain diffusion of the spin polarized electrons is provided on the side, opposite to the pinned magnetization layer, of the storage layer; and the spin barrier layer includes at least one material selected from the group composing of oxides, nitrides, and fluorides.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: December 5, 2023
    Assignee: SONY CORPORATION
    Inventors: Yutaka Higo, Masanori Hosomi, Kazuhiro Bessho, Tetsuya Yamamoto, Hiroyuki Ohmori, Kazutaka Yamane, Yuki Oishi, Hiroshi Kano
  • Patent number: 11776605
    Abstract: A storage element includes a layer structure including a storage layer having a direction of magnetization which changes according to information, a magnetization fixed layer having a fixed direction of magnetization, and an intermediate layer disposed therebetween, which intermediate layer contains a nonmagnetic material. The magnetization fixed layer has at least two ferromagnetic layers having a direction of magnetization tilted from a direction perpendicular to a film surface, which are laminated and magnetically coupled interposing a coupling layer therebetween. This configuration may effectively prevent divergence of magnetization reversal time due to directions of magnetization of the storage layer and the magnetization fixed layer being substantially parallel or antiparallel, reduce write errors, and enable writing operation in a short time.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: October 3, 2023
    Assignee: Sony Group Corporation
    Inventors: Yutaka Higo, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Tetsuya Asayama, Kazutaka Yamane, Hiroyuki Uchida
  • Patent number: 11527261
    Abstract: A storage element is provided. The storage element includes a memory layer; a fixed magnetization layer; an intermediate layer including a non-magnetic material; wherein the intermediate layer is provided between the memory layer and the fixed magnetization layer; wherein the fixed magnetization layer includes at least a first magnetic layer, a second magnetic layer, and a non-magnetic layer, and wherein the first magnetic layer includes a CoFeB composition. A memory apparatus and a magnetic head are also provided.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: December 13, 2022
    Assignee: Sony Corporation
    Inventors: Kazutaka Yamane, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Yutaka Higo, Tetsuya Asayama, Hiroyuki Uchida
  • Patent number: 11502244
    Abstract: A magnetic element is provided. The magnetic element includes a free magnetization layer having a surface area that is approximately 1,600 nm2 or less, the free magnetization layer including a magnetization state that is configured to be changed; an insulation layer coupled to the free magnetization layer, the insulation layer including a non-magnetic material; and a magnetization fixing layer coupled to the insulation layer opposite the free magnetization layer, the magnetization fixing layer including a fixed magnetization so as to be capable of serving as a reference of the free magnetization layer.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: November 15, 2022
    Assignee: Sony Corporation
    Inventors: Kazutaka Yamane, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Yutaka Higo, Tetsuya Asayama, Hiroyuki Uchida
  • Patent number: 11475932
    Abstract: A storage element includes a layer structure including a storage layer having a direction of magnetization which changes according to information, a magnetization fixed layer having a fixed direction of magnetization, and an intermediate layer disposed therebetween, which intermediate layer contains a nonmagnetic material. The magnetization fixed layer has at least two ferromagnetic layers having a direction of magnetization tilted from a direction perpendicular to a film surface, which are laminated and magnetically coupled interposing a coupling layer therebetween. This configuration may effectively prevent divergence of magnetization reversal time due to directions of magnetization of the storage layer and the magnetization fixed layer being substantially parallel or antiparallel, reduce write errors, and enable writing operation in a short time.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: October 18, 2022
    Assignee: Sony Group Corporation
    Inventors: Yutaka Higo, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Tetsuya Asayama, Kazutaka Yamane, Hiroyuki Uchida
  • Publication number: 20220328084
    Abstract: A storage element includes a layer structure including a storage layer having a direction of magnetization which changes according to information, a magnetization fixed layer having a fixed direction of magnetization, and an intermediate layer disposed therebetween, which intermediate layer contains a nonmagnetic material. The magnetization fixed layer has at least two ferromagnetic layers having a direction of magnetization tilted from a direction perpendicular to a film surface, which are laminated and magnetically coupled interposing a coupling layer therebetween. This configuration may effectively prevent divergence of magnetization reversal time due to directions of magnetization of the storage layer and the magnetization fixed layer being substantially parallel or antiparallel, reduce write errors, and enable writing operation in a short time.
    Type: Application
    Filed: April 29, 2022
    Publication date: October 13, 2022
    Inventors: Yutaka Higo, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Tetsuya Asayama, Kazutaka Yamane, Hiroyuki Uchida
  • Patent number: 11462681
    Abstract: Provided is a magnetic storage element including a stack structure which includes a fixed layer whose magnetization direction is fixed, a storage layer whose magnetization direction is reversible, and a non-magnetic layer sandwiched between the fixed layer and the storage layer. The magnetization direction has a direction along a stack direction of the stack structure, and the fixed layer or the storage layer has a region which contains at least one contained element selected from the element group consisting of B, C, N, Al, Mg, and Si at 30 atm % or more and 80 atm % or less.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: October 4, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki Uchida, Masanori Hosomi, Kazuhiro Bessho, Yutaka Higo, Yo Sato, Naoki Hase, Hiroyuki Ohmori
  • Patent number: 11430497
    Abstract: There is provided a magnetic storage element including: a storage layer; a reference layer provided at least one surface side of the storage layer with a non-magnetic layer in between; a magnetization fixation layer provided at a surface side opposite to a surface of the reference layer at which the storage layer is provided, with a non-magnetic layer in between; and a magnetization assist layer provided at a surface side opposite to a surface of the magnetization fixation layer at which the reference layer is provided, with a non-magnetic layer in between, in which change in a magnetization direction is easier than in the storage layer.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: August 30, 2022
    Assignee: Sony Corporation
    Inventors: Hiroyuki Ohmori, Masanori Hosomi, Kazuhiro Bessho, Yutaka Higo, Hiroyuki Uchida
  • Publication number: 20220238797
    Abstract: A storage element including a storage layer configured to hold information by use of a magnetization state of a magnetic material, with a pinned magnetization layer being provided on one side of the storage layer, with a tunnel insulation layer, and with the direction of magnetization of the storage layer being changed through injection of spin polarized electrons by passing a current in the lamination direction, so as to record information in the storage layer, wherein a spin barrier layer configured to restrain diffusion of the spin polarized electrons is provided on the side, opposite to the pinned magnetization layer, of the storage layer; and the spin barrier layer includes at least one material selected from the group composing of oxides, nitrides, and fluorides.
    Type: Application
    Filed: April 11, 2022
    Publication date: July 28, 2022
    Inventors: Yutaka Higo, Masanori Hosomi, Kazuhiro Bessho, Tetsuya Yamamoto, Hiroyuki Ohmori, Kazutaka Yamane, Yuki Oishi, Hiroshi Kano
  • Patent number: 11322681
    Abstract: A storage element including a storage layer configured to hold information by use of a magnetization state of a magnetic material, with a pinned magnetization layer being provided on one side of the storage layer, with a tunnel insulation layer, and with the direction of magnetization of the storage layer being changed through injection of spin polarized electrons by passing a current in the lamination direction, so as to record information in the storage layer, wherein a spin barrier layer configured to restrain diffusion of the spin polarized electrons is provided on the side, opposite to the pinned magnetization layer, of the storage layer; and the spin barrier layer includes at least one material selected from the group composing of oxides, nitrides, and fluorides.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: May 3, 2022
    Assignee: Sony Corporation
    Inventors: Yutaka Higo, Masanori Hosomi, Kazuhiro Bessho, Tetsuya Yamamoto, Hiroyuki Ohmori, Kazutaka Yamane, Yuki Oishi, Hiroshi Kano
  • Patent number: 11276729
    Abstract: A magnetoresistive element includes: a first laminated structure body having a first surface and a second surface 20B facing the first surface; and a second laminated structure body formed by laminating a storage layer, an intermediate layer, and a magnetization fixed layer, the second laminated structure body having a first surface and a second surface facing the first surface, the first surface being positioned facing the second surface of the first laminated structure body. The first laminated structure body has a laminated structure including, from the first surface side of the first laminated structure body, a first layer made of a metal nitride and a second layer made of ruthenium or a ruthenium compound.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: March 15, 2022
    Assignee: Sony Corporation
    Inventors: Hiroyuki Uchida, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Yutaka Higo
  • Patent number: 11257516
    Abstract: The present technology relates to a storage device that realizes both a high information retention property and a low power consumption. A storage device includes a fixed layer, a storage layer, an intermediate layer, and a heat generation layer. The fixed layer includes a first ferromagnetic layer that includes a fixed perpendicular magnetization. The storage layer includes a second ferromagnetic layer that includes a perpendicular magnetization invertible by a spin injection. The intermediate layer is formed of an insulator and is arranged between the storage layer and the fixed layer. The heat generation layer is formed of a resistance heating element and is arranged in at least one of the storage layer and the fixed layer. With this configuration, it becomes possible to provide a storage device that realizes both a high information retention property and a low power consumption.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: February 22, 2022
    Assignee: Sony Corporation
    Inventors: Kazutaka Yamane, Hiroyuki Uchida, Yutaka Higo, Hiroyuki Ohmori, Kazuhiro Bessho, Masanori Hosomi
  • Publication number: 20210288244
    Abstract: Provided is a magnetic storage element including a stack structure which includes a fixed layer whose magnetization direction is fixed, a storage layer whose magnetization direction is reversible, and a non-magnetic layer sandwiched between the fixed layer and the storage layer. The magnetization direction has a direction along a stack direction of the stack structure, and the fixed layer or the storage layer has a region which contains at least one contained element selected from the element group consisting of B, C, N, Al, Mg, and Si at 30 atm % or more and 80 atm % or less.
    Type: Application
    Filed: June 6, 2019
    Publication date: September 16, 2021
    Applicant: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki UCHIDA, Masanori HOSOMI, Kazuhiro BESSHO, Yutaka HIGO, Yo SATO, Naoki HASE, Hiroyuki OHMORI
  • Publication number: 20210174826
    Abstract: A storage element is provided. The storage element includes a memory layer; a fixed magnetization layer; an intermediate layer including a non-magnetic material; wherein the intermediate layer is provided between the memory layer and the fixed magnetization layer; wherein the fixed magnetization layer includes at least a first magnetic layer, a second magnetic layer, and a non-magnetic layer, and wherein the first magnetic layer includes a CoFeB composition. A memory apparatus and a magnetic head are also provided.
    Type: Application
    Filed: February 22, 2021
    Publication date: June 10, 2021
    Inventors: Kazutaka YAMANE, Masanori HOSOMI, Hiroyuki OHMORI, Kazuhiro BESSHO, Yutaka HIGO, Tetsuya ASAYAMA, Hiroyuki UCHIDA
  • Patent number: 10971175
    Abstract: A storage element is provided. The storage element includes a memory layer; a fixed magnetization layer; an intermediate layer including a non-magnetic material; wherein the intermediate layer is provided between the memory layer and the fixed magnetization layer; wherein the fixed magnetization layer includes at least a first magnetic layer, a second magnetic layer, and a non-magnetic layer, and wherein the first magnetic layer includes a CoFeB composition. A memory apparatus and a magnetic head are also provided.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: April 6, 2021
    Assignee: Sony Corporation
    Inventors: Kazutaka Yamane, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Yutaka Higo, Tetsuya Asayama, Hiroyuki Uchida
  • Patent number: 10964604
    Abstract: To provide a magnetic storage element, a magnetic storage device, and an electronic device which store multi-value information with a simpler structure.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: March 30, 2021
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Hiroyuki Uchida, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Yutaka Higo, Yo Sato, Naoki Hase
  • Publication number: 20210083176
    Abstract: A magnetic element is provided. The magnetic element includes a free magnetization layer having a surface area that is approximately 1,600 nm2 or less, the free magnetization layer including a magnetization state that is configured to be changed; an insulation layer coupled to the free magnetization layer, the insulation layer including a non-magnetic material; and a magnetization fixing layer coupled to the insulation layer opposite the free magnetization layer, the magnetization fixing layer including a fixed magnetization so as to be capable of serving as a reference of the free magnetization layer.
    Type: Application
    Filed: November 30, 2020
    Publication date: March 18, 2021
    Inventors: Kazutaka YAMANE, Masanori HOSOMI, Hiroyuki OHMORI, Kazuhiro BESSHO, Yutaka HIGO, Tetsuya ASAYAMA, Hiroyuki UCHIDA
  • Patent number: 10937955
    Abstract: There is disclosed an information storage element including a first layer including a ferromagnetic layer with a magnetization direction perpendicular to a film face; an insulation layer coupled to the first layer; and a second layer coupled to the insulation layer opposite the first layer, the second layer including a fixed magnetization so as to be capable of serving as a reference of the first layer. The first layer is capable of storing information according to a magnetization state of a magnetic material, and the magnetization state is configured to be changed by a spin injection. A magnitude of an effective diamagnetic field which the first layer receives is smaller than a saturated magnetization amount of the first layer.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: March 2, 2021
    Assignee: Sony Corporation
    Inventors: Kazutaka Yamane, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Yutaka Higo, Hiroyuki Uchida, Tetsuya Asayama
  • Patent number: RE49364
    Abstract: 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.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: January 10, 2023
    Assignee: Sony Corporation
    Inventors: Hiroyuki Uchida, Masanori Hosomi, Hiroyuki Ohmori, Kazuhiro Bessho, Yutaka Higo, Tetsuya Asayama, Kazutaka Yamane