Patents by Inventor Shumpei Omine

Shumpei Omine 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: 11133456
    Abstract: According to one embodiment, a magnetic storage device includes: a magnetoresistive effect element including a non-magnet, and a stacked structure on the non-magnet, the stacked structure including: a first ferromagnet on the non-magnet; an anti-ferromagnet being exchange-coupled with the first ferromagnet; and a second ferromagnet between the first ferromagnet and the anti-ferromagnet. The stacked structure is configured to: have a first resistance value in response to a first current flowing through the stacked structure in a first direction, and have a second resistance value different from the first resistance value in response to a second current flowing through the stacked structure in a second direction opposite to the first direction.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: September 28, 2021
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Takeshi Iwasaki, Akiyuki Murayama, Tadashi Kai, Tadaomi Daibou, Masaki Endo, Shumpei Omine, Taichi Igarashi, Junichi Ito
  • Patent number: 10978636
    Abstract: According to one embodiment, a storage device includes a magnetoresistive effect element comprising a nonmagnetic layer and a stacked body on the nonmagnetic layer. The stacked body includes a first ferromagnetic layer on the nonmagnetic layer, a second ferromagnetic layer exchange-coupled with the first ferromagnetic layer, and a magnetic layer between the first ferromagnetic layer and the second ferromagnetic layer. The magnetic layer includes a magnetic material and at least one compound selected from among a carbide, a nitride, and a boride.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: April 13, 2021
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Takeshi Iwasaki, Akiyuki Murayama, Tadashi Kai, Tadaomi Daibou, Masaki Endo, Shumpei Omine, Taichi Igarashi, Junichi Ito
  • Patent number: 10707268
    Abstract: A magnetoresistive element according to an embodiment includes: a first layer; a first magnetic layer; a second magnetic layer disposed between the first layer and the first magnetic layer; a nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; and an insulating layer disposed at least on side surfaces of the nonmagnetic layer, the first layer including: at least one element selected from a first group consisting of Hf, Zr, Al, Cr, and Mg; and at least one element selected from a second group consisting of Ta, W, Mo, Nb, Si, Ge, Be, Li, Sn, Sb, and P, and the insulating layer including at least one element selected from the first group.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: July 7, 2020
    Assignee: TOSHIBA MEMORY CORPORATION
    Inventors: Masaki Endo, Tadaomi Daibou, Shumpei Omine, Akiyuki Murayama, Junichi Ito
  • Publication number: 20200083432
    Abstract: According to one embodiment, a magnetic storage device includes: a magnetoresistive effect element including a non-magnet, and a stacked structure on the non-magnet, the stacked structure including: a first ferromagnet on the non-magnet; an anti-ferromagnet being exchange-coupled with the first ferromagnet; and a second ferromagnet between the first ferromagnet and the anti-ferromagnet. The stacked structure is configured to: have a first resistance value in response to a first current flowing through the stacked structure in a first direction, and have a second resistance value different from the first resistance value in response to a second current flowing through the stacked structure in a second direction opposite to the first direction.
    Type: Application
    Filed: March 13, 2019
    Publication date: March 12, 2020
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Takeshi IWASAKI, Akiyuki MURAYAMA, Tadashi KAI, Tadaomi DAIBOU, Masaki ENDO, Shumpei OMINE, Taichi IGARASHI, Junichi ITO
  • Publication number: 20200083431
    Abstract: According to one embodiment, a storage device includes a magnetoresistive effect element comprising a nonmagnetic layer and a stacked body on the nonmagnetic layer. The stacked body includes a first ferromagnetic layer on the nonmagnetic layer, a second ferromagnetic layer exchange-coupled with the first ferromagnetic layer, and a magnetic layer between the first ferromagnetic layer and the second ferromagnetic layer. The magnetic layer includes a magnetic material and at least one compound selected from among a carbide, a nitride, and a boride.
    Type: Application
    Filed: March 1, 2019
    Publication date: March 12, 2020
    Inventors: Takeshi IWASAKI, Akiyuki MURAYAMA, Tadashi KAI, Tadaomi DAIBOU, Masaki ENDO, Shumpei OMINE, Taichi IGARASHI, Junichi ITO
  • Patent number: 10340442
    Abstract: A magnetoresistive element according to an embodiment includes: a first magnetic layer; a second magnetic layer; and a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer, wherein the second magnetic layer includes a magnetic material containing at least one element selected from a first group consisting of Mn, Fe, Co, and Ni; at least one element selected from a second group consisting of Ru, Rh, Pd, Ag, Os, Ir, Pt, and Au; and at least one element selected from a third group consisting of Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: July 2, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoki Hase, Takao Ochiai, Tadaomi Daibou, Yushi Kato, Shumpei Omine, Junichi Ito
  • Patent number: 10256394
    Abstract: A magnetoresistive element according to an embodiment includes: a first layer containing Al and at least one element of Ni or Co, the first layer having a CsCl structure; a first magnetic layer; a first nonmagnetic layer between the first layer and the first magnetic layer; and a second magnetic layer between the first layer and the first nonmagnetic layer, the second magnetic layer containing Mn and Ga.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: April 9, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shumpei Omine, Tadaomi Daibou, Yushi Kato, Naoki Hase, Junichi Ito
  • Patent number: 10186656
    Abstract: A magnetic memory according to an embodiment includes: a first magnetic layer; a second magnetic layer; a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; a third magnetic layer disposed between the first magnetic layer and the first nonmagnetic layer; and a first layer disposed between the first magnetic layer and the third magnetic layer, wherein the first layer contains at least one element selected from the group consisting of Co, Fe, Ni, and Mn, and at least one element selected from the group consisting of Ta, Mo, Zr, Nb, Hf, V, Ti, Sc, and La.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: January 22, 2019
    Assignee: Toshiba Memory Corporation
    Inventors: Shumpei Omine, Takeshi Iwasaki, Masaki Endo, Akiyuki Murayama, Tadaomi Daibou, Tadashi Kai, Junichi Ito
  • Publication number: 20180374894
    Abstract: A magnetoresistive element according to an embodiment includes: a first layer; a first magnetic layer; a second magnetic layer disposed between the first layer and the first magnetic layer; a nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; and an insulating layer disposed at least on side surfaces of the nonmagnetic layer, the first layer including: at least one element selected from a first group consisting of Hf, Zr, Al, Cr, and Mg; and at least one element selected from a second group consisting of Ta, W, Mo, Nb, Si, Ge, Be, Li, Sn, Sb, and P, and the insulating layer including at least one element selected from the first group.
    Type: Application
    Filed: August 14, 2018
    Publication date: December 27, 2018
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Masaki Endo, Tadaomi Daibou, Shumpei Omine, Akiyuki Murayama, Junichi Ito
  • Publication number: 20180268887
    Abstract: A magnetoresistive element according to an embodiment includes: a first nonmagnetic layer; a first magnetic layer; a second magnetic layer disposed between the first nonmagnetic layer and the first magnetic layer; a second nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; a third nonmagnetic layer disposed between the second nonmagnetic layer and the second magnetic layer; and a third magnetic layer disposed between the second nonmagnetic layer and the third nonmagnetic layer, wherein elements constituting the second magnetic layer at least partially differ from elements constituting the third magnetic layer, a relative permittivity of the first nonmagnetic layer is at least 10, and the third nonmagnetic layer contains at least one element selected from the group consisting of Nb, Ta, Mo, W, Hf, Zr, Ti, Sc, V, Cr, Mn, Fe, Co, Ni, Mg, Al, Ru, Ir, Rh, Pd, Pt, Cu, Ag, and Au.
    Type: Application
    Filed: September 11, 2017
    Publication date: September 20, 2018
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Masaki ENDO, Tadaomi Daibou, Shumpei Omine, Junichi Ito, Akiyuki Murayama, Takeshi Iwasaki
  • Publication number: 20180269382
    Abstract: A magnetic memory according to an embodiment includes: a first magnetic layer; a second magnetic layer; a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; a third magnetic layer disposed between the first magnetic layer and the first nonmagnetic layer; and a first layer disposed between the first magnetic layer and the third magnetic layer, wherein the first layer contains at least one element selected from the group consisting of Co, Fe, Ni, and Mn, and at least one element selected from the group consisting of Ta, Mo, Zr, Nb, Hf, V, Ti, Sc, and La.
    Type: Application
    Filed: September 13, 2017
    Publication date: September 20, 2018
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Shumpei OMINE, Takeshi IWASAKI, Masaki ENDO, Akiyuki MURAYAMA, Tadaomi DAIBOU, Tadashi KAI, Junichi ITO
  • Patent number: 9991314
    Abstract: A magnetoresistive element according to an embodiment includes: a first magnetic layer; a second magnetic layer; and a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer, the second magnetic layer containing a material with a composition (lR1-xhRx)z(TM1-yZy)1-z (0<x<1, 0?y?0.6, 0.13?z?0.22) where lR is at least one element of Y, La, Ce, Pr, Nd, and Sm, hR is at least one element of Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu, TM is at least one element of Mn, Fe, Co, or Ni, and Z is at least one element of B, C, Mg, Al, Sc, Ti, Cu, or Zn.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: June 5, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Naoki Hase, Tadaomi Daibou, Yushi Kato, Shumpei Omine, Junichi Ito
  • Publication number: 20180083065
    Abstract: A magnetoresistive element according to an embodiment includes: a first layer; a first magnetic layer; a second magnetic layer disposed between the first layer and the first magnetic layer; a nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; and an insulating layer disposed at least on side surfaces of the nonmagnetic layer, the first layer including: at least one element selected from a first group consisting of Hf, Zr, Al, Cr, and Mg; and at least one element selected from a second group consisting of Ta, W, Mo, Nb, Si, Ge, Be, Li, Sn, Sb, and P, and the insulating layer including at least one element selected from the first group.
    Type: Application
    Filed: February 28, 2017
    Publication date: March 22, 2018
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Masaki ENDO, Tadaomi DAIBOU, Shumpei OMINE, Akiyuki MURAYAMA, Junichi ITO
  • Patent number: 9859491
    Abstract: A magnetoresistive element according to an embodiment includes a stack structure, the stack structure including: a first magnetic layer containing Mn and at least one element of Ga, Ge, or Al; a second magnetic layer; a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; a third magnetic layer disposed between the first magnetic layer and the first nonmagnetic layer; and a second nonmagnetic layer disposed between the first magnetic layer and the third magnetic layer, the second nonmagnetic layer containing at least one element of Mg, Ba, Ca, C, Sr, Sc, Y, Gd, Tb, Dy, Ce, Ho, Yb, Er, or B.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: January 2, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadaomi Daibou, Yushi Kato, Shumpei Omine, Naoki Hase, Junichi Ito
  • Patent number: 9793469
    Abstract: A magnetoresistive element according to an embodiment includes: a first magnetic layer; a second magnetic layer; a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; a third magnetic layer disposed between the first magnetic layer and the first nonmagnetic layer; and a layer having an amorphous structure, the layer containing two or more elements that are contained in the first magnetic layer, the layer being disposed between the first magnetic layer and the third magnetic layer.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: October 17, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yushi Kato, Tadaomi Daibou, Yuichi Ohsawa, Shumpei Omine, Naoki Hase
  • Publication number: 20170179374
    Abstract: A magnetoresistive element according to an embodiment includes: a first layer containing Al and at least one element of Ni or Co, the first layer having a CsCl structure; a first magnetic layer; a first nonmagnetic layer between the first layer and the first magnetic layer; and a second magnetic layer between the first layer and the first nonmagnetic layer, the second magnetic layer containing Mn and Ga.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 22, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shumpei OMINE, Tadaomi Daibou, Yushi Kato, Naoki Hase, Junichi Ito
  • Publication number: 20170170389
    Abstract: A magnetoresistive element according to an embodiment includes: a first magnetic layer; a second magnetic layer; and a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer, wherein the second magnetic layer includes a magnetic material containing at least one element selected from a first group consisting of Mn, Fe, Co, and Ni; at least one element selected from a second group consisting of Ru, Rh, Pd, Ag, Os, Ir, Pt, and Au; and at least one element selected from a third group consisting of Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 15, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Naoki HASE, Takao OCHIAI, Tadaomi DAIBOU, Yushi KATO, Shumpei OMINE, Junichi ITO
  • Publication number: 20160380186
    Abstract: A magnetoresistive element according to an embodiment includes a stack structure, the stack structure including: a first magnetic layer containing Mn and at least one element of Ga, Ge, or Al; a second magnetic layer; a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; a third magnetic layer disposed between the first magnetic layer and the first nonmagnetic layer; and a second nonmagnetic layer disposed between the first magnetic layer and the third magnetic layer, the second nonmagnetic layer containing at least one element of Mg, Ba, Ca, C, Sr, Sc, Y, Gd, Tb, Dy, Ce, Ho, Yb, Er, or B.
    Type: Application
    Filed: September 8, 2016
    Publication date: December 29, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadaomi DAIBOU, Yushi KATO, Shumpei OMINE, Naoki HASE, Junichi ITO
  • Publication number: 20160380029
    Abstract: A magnetoresistive element according to an embodiment includes: a first magnetic layer; a second magnetic layer; and a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer, the second magnetic layer containing a material with a composition (lR1-xhRx)z(TM1-yZy)1-z (0<x<1, 0?y?0.6, 0.13?z?0.22) where lR is at least one element of Y, La, Ce, Pr, Nd, and Sm, hR is at least one element of Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu, TM is at least one element of Mn, Fe, Co, or Ni, and Z is at least one element of B, C, Mg, Al, Sc, Ti, Cu, or Zn.
    Type: Application
    Filed: September 12, 2016
    Publication date: December 29, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Naoki HASE, Tadaomi Daibou, Yushi Kato, Shumpei Omine, Junichi Ito
  • Publication number: 20160380184
    Abstract: A magnetoresistive element according to an embodiment includes: a first magnetic layer; a second magnetic layer; a first nonmagnetic layer disposed between the first magnetic layer and the second magnetic layer; a third magnetic layer disposed between the first magnetic layer and the first nonmagnetic layer; and a layer having an amorphous structure, the layer containing two or more elements that are contained in the first magnetic layer, the layer being disposed between the first magnetic layer and the third magnetic layer.
    Type: Application
    Filed: September 8, 2016
    Publication date: December 29, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yushi KATO, Tadaomi DAIBOU, Yuichi OHSAWA, Shumpei OMINE, Naoki HASE