Patents by Inventor Kazutaka Yamane

Kazutaka Yamane 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).

  • Patent number: 11894029
    Abstract: Structures including a magnetic-tunnel-junction layer stack and methods of forming such structures. The structure comprises a magnetic-tunneling-junction layer stack including a reference layer, an antiferromagnetic layer, a free layer positioned between the reference layer and the antiferromagnetic layer, and a tunnel barrier layer positioned between the reference layer and the free layer. The antiferromagnetic layer has a static magnetic field with a magnetization, and the antiferromagnetic layer is antiferromagnetically coupled to the free layer.
    Type: Grant
    Filed: October 27, 2022
    Date of Patent: February 6, 2024
    Assignee: GlobalFoundries Singapore Pte. Ltd.
    Inventors: Vinayak Bharat Naik, Joel Tan, Jia Hao Lim, Kazutaka Yamane
  • 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
  • Publication number: 20230403953
    Abstract: A memory device may be provided, including a first planar electrode, a second planar electrode, and a switching element arranged between the first planar electrode and the second planar electrode to where a first side of the switching element is arranged over the first planar electrode and where a second side of the switching element is arranged under the second planar electrode. The switching element is thicker at the first side than the second side, and the switching element is configured to provide a conductive filament formation region.
    Type: Application
    Filed: August 18, 2023
    Publication date: December 14, 2023
    Inventors: Ju Dy LIM, Mei Zhen NG, Kazutaka YAMANE, Chim Seng SEET
  • 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: 11791083
    Abstract: The present disclosure relates to integrated circuits, and more particularly, a tunnel magneto-resistive (TMR) sensor with perpendicular magnetic tunneling junction (p-MTJ) structures and methods of manufacture and operation. The structure includes: a first magnetic tunneling junction (MTJ) structure on a first level; a second MTJ structure on a same wiring level as the first MTJ structure; and at least one metal line between the first MTJ structure and the second MTJ structure.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: October 17, 2023
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Eng-Huat Toh, Hemant M. Dixit, Vinayak Bharat Naik, Kazutaka Yamane
  • 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
  • Publication number: 20230296698
    Abstract: The present disclosure relates to sensors and, more particularly, to magnetic field sensors. More specifically, a structure includes a package with a wraparound geometry and discontinuous ends, and includes a low permeability magnetic material.
    Type: Application
    Filed: March 17, 2022
    Publication date: September 21, 2023
    Inventors: Vinayak Bharat Naik, Hemant M. Dixit, Kazutaka Yamane, Eng Huat Toh
  • Patent number: 11751483
    Abstract: According to various embodiments, a spin diode device may include a magnetic tunnel junction stack. The magnetic tunnel junction stack may include a lower magnetic layer, a tunnel barrier layer over the lower magnetic layer, and an upper magnetic layer over the tunnel barrier layer. The lower magnetic layer may include a lower magnetic film. The tunnel barrier layer comprising an insulating material. The upper magnetic layer may include an upper magnetic film. Each of the lower magnetic film and the upper magnetic film may have perpendicular magnetic anisotropy.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: September 5, 2023
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Wai Cheung Law, Grayson Dao Hwee Wong, Kazutaka Yamane, Chim Seng Seet, Wen Siang Lew
  • Patent number: 11747412
    Abstract: The present disclosure relates to integrated circuits, and, more particularly, to a magnetic field sensor using magnetic tunneling junction (MTJ) structures and passive resistors, and methods of manufacture and operation. The structure includes: a first portion of a circuit including a first MTJ structure and a first resistor coupled in series between a first voltage source and a second voltage source; and a second portion of the circuit including a second MTJ structure and a second resistor coupled in series between the first voltage source and the second voltage source. The first portion and the second portion are coupled in parallel between the first voltage source and the second voltage source.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: September 5, 2023
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Vinayak Bharat Naik, Eng Huat Toh, Kazutaka Yamane, Hemant M. Dixit
  • Patent number: 11719773
    Abstract: A magnetic field sensor may include a plurality of MTJ elements. Each MTJ element of has a state indicated by a magnetic moment direction of a sensing layer relative to a pinned, reference layer in an absence of an external magnetic field. The plurality of MTJ elements are arranged into two identical sets of at least two MTJ elements, where each MTJ element in each respective set has a different state. The states of the MTJ elements are arranged in a manner to measure the external magnetic field regardless of the direction of the external magnetic field. The MTJ elements include identical layers, and are electrically serially connected.
    Type: Grant
    Filed: July 14, 2021
    Date of Patent: August 8, 2023
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Hemant M. Dixit, Vinayak Bharat Naik, Kazutaka Yamane, Eng Huat Toh
  • Patent number: 11682514
    Abstract: An illustrative memory cell disclosed herein includes a bottom electrode, a top electrode positioned above the bottom electrode and an MTJ (Magnetic Tunnel Junction) structure positioned above the bottom electrode and below the top electrode. In this example, the MTJ structure includes a first ferromagnetic material layer positioned above the bottom electrode, a non-magnetic insulation layer positioned above the first ferromagnetic material layer and a second ferromagnetic material layer positioned on the non-magnetic insulation layer, wherein there is a curved, non-planar interface between the non-magnetic insulation layer and the ferromagnetic material layer.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: June 20, 2023
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Hemant Dixit, Vinayak Bharat Naik, Kazutaka Yamane
  • Publication number: 20230076514
    Abstract: The present disclosure relates to integrated circuits, and, more particularly, to a magnetic field sensor using magnetic tunneling junction (MTJ) structures and passive resistors, and methods of manufacture and operation. The structure includes: a first portion of a circuit including a first MTJ structure and a first resistor coupled in series between a first voltage source and a second voltage source; and a second portion of the circuit including a second MTJ structure and a second resistor coupled in series between the first voltage source and the second voltage source. The first portion and the second portion are coupled in parallel between the first voltage source and the second voltage source.
    Type: Application
    Filed: September 8, 2021
    Publication date: March 9, 2023
    Inventors: Vinayak Bharat NAIK, Eng Huat TOH, Kazutaka YAMANE, Hemant M. DIXIT
  • Patent number: 11574758
    Abstract: The present disclosure relates to integrated circuits, and more particularly, to a highly sensitive tunnel magnetoresistance sensor (TMR) with a Wheatstone bridge for field/position detection in integrated circuits and methods of manufacture and operation. In particular, the present disclosure relates to a structure including: a first magnetic tunneling junction (MTJ) structure on a first device level; and a second magnetic tunneling junction (MTJ) structure on a different device level than the first MTJ structure. The second MTJ structure includes properties different than the first MTJ structure.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: February 7, 2023
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Kazutaka Yamane, Eng-Huat Toh, Vinayak Bharat Naik, Hemant M. Dixit
  • Publication number: 20230014455
    Abstract: A magnetic field sensor may include a plurality of MTJ elements. Each MTJ element of has a state indicated by a magnetic moment direction of a sensing layer relative to a pinned, reference layer in an absence of an external magnetic field. The plurality of MTJ elements are arranged into two identical sets of at least two MTJ elements, where each MTJ element in each respective set has a different state. The states of the MTJ elements are arranged in a manner to measure the external magnetic field regardless of the direction of the external magnetic field. The MTJ elements include identical layers, and are electrically serially connected.
    Type: Application
    Filed: July 14, 2021
    Publication date: January 19, 2023
    Inventors: Hemant M. Dixit, Vinayak Bharat Naik, Kazutaka Yamane, Eng Huat Toh
  • 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
  • Publication number: 20220384082
    Abstract: The present disclosure relates to integrated circuits, and more particularly, a tunnel magneto-resistive (TMR) sensor with perpendicular magnetic tunneling junction (p-MTJ) structures and methods of manufacture and operation. The structure includes: a first magnetic tunneling junction (MTJ) structure on a first level; a second MTJ structure on a same wiring level as the first MTJ structure; and at least one metal line between the first MTJ structure and the second MTJ structure.
    Type: Application
    Filed: May 26, 2021
    Publication date: December 1, 2022
    Inventors: Eng-Huat TOH, Hemant M. DIXIT, Vinayak Bharat NAIK, Kazutaka YAMANE
  • Patent number: 11513175
    Abstract: A semiconductor device may be provided including a first series portion and a second series portion electrically connected in parallel with the first series portion. The first series portion may include a first MTJ stack and a first resistive element electrically connected in series. The second series portion may include a second MTJ stack and a second resistive element electrically connected in series. The first resistive element may include a third MTJ stack and the second resistive element may include a fourth MTJ stack. The first, second, third, and fourth MTJ stacks may include a same number of layers, which may include a fixed layer, a free layer, and a tunnelling barrier layer between the fixed layer and the free layer. Alternatively, the first resistive element may include a first transistor and the second resistive element may include a second transistor.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: November 29, 2022
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Ping Zheng, Eng Huat Toh, Kazutaka Yamane, Shyue Seng Tan, Kiok Boone Elgin Quek
  • Publication number: 20220367790
    Abstract: Structures for a non-volatile memory element and methods of forming a structure for a non-volatile memory element. The structure includes a non-volatile memory element having a magnetic-tunneling-junction layer stack. The magnetic-tunneling-junction layer stack has a fixed layer that includes a synthetic antiferromagnetic layer. The structure further includes a via positioned adjacent to the magnetic-tunneling-junction layer stack. The via is comprised of a magnetic material.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 17, 2022
    Inventors: Vinayak Bharat Naik, Kazutaka Yamane, Hemant Dixit
  • 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: 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