公开(公告)号：US20240099155A1

公开(公告)日：2024-03-21

申请号：US18464350

申请日：2023-09-11

Applicant: Kioxia Corporation

Inventor： Masahiro KOIKE ,  Michael Arnaud QUINSAT ,  Nobuyuki UMETSU ,  Tsutomu NAKANISHI ,  Agung SETIADI ,  Megumi YAKABE ,  Shigeyuki HIRAYAMA ,  Masaki KADO ,  Yasuaki OOTERA ,  Shiho NAKAMURA ,  Susumu HASHIMOTO ,  Tsuyoshi KONDO

IPC: H10N50/80 ,  G11C11/16 ,  H10B61/00 ,  H10N50/10

CPC classification number: H10N50/80 ,  G11C11/161 ,  G11C11/1673 ,  G11C11/1675 ,  H10B61/00 ,  H10N50/10

Abstract: A memory includes: a magnet including a first and second portions adjacent in a first direction. The first portion has a first dimension in a second direction at a first position at which a dimension of the magnet in the second direction is maximum, the second direction perpendicular to the first direction, the second portion has a second dimension in the second direction at a second position at which a dimension of the magnet in the second direction is minimum, the second dimension smaller than the first dimension, the first portion is continuous to the second portion via a third position between the first and second positions, a curve corresponding to an outer of the magnet extends between the first and third positions, and the curve passes through a side closer to the central axis of the magnet than a straight line connecting the first and second positions.

公开(公告)号：US20240274176A1

公开(公告)日：2024-08-15

申请号：US18439612

申请日：2024-02-12

Applicant: Kioxia Corporation

Inventor： Naoharu SHIMOMURA ,  Tsuyoshi KONDO ,  Michael ARNAUD QUINSAT ,  Yasuaki OOTERA ,  Masaki KADO ,  Yoshihiro UEDA ,  Tsutomu NAKANISHI ,  Nobuyuki UMETSU ,  Susumu HASHIMOTO ,  Shiho NAKAMURA

IPC: G11C11/16 ,  H10B61/00 ,  H10N50/10 ,  H10N50/80

CPC classification number: G11C11/161 ,  H10B61/22 ,  H10N50/10 ,  H10N50/80

Abstract: A magnetic memory includes a plurality of cylindrical magnetic members each extending along a first direction and having a first end portion and a second end portion; and a magnetoresistive element that includes: a magnetization variable layer with a variable magnetization direction, a magnetization fixed layer with a fixed magnetization direction, and a non-magnetic layer between the magnetization variable layer and the magnetization fixed layer. When viewed in the first direction, the magnetoresistive element overlaps a part of the first end portion of one of the magnetic members. The magnetization direction of the magnetization variable layer intersects with the magnetization direction of the magnetization fixed layer at an angle larger than 0 degrees and smaller than 180 degrees.

公开(公告)号：US20240055028A1

公开(公告)日：2024-02-15

申请号：US18179280

申请日：2023-03-06

Applicant: Kioxia Corporation

Inventor： Nobuyuki UMETSU ,  Tsuyoshi KONDO ,  Naoharu SHIMOMURA ,  Shiho NAKAMURA ,  Susumu HASHIMOTO ,  Yasuaki OOTERA ,  Yoshihiro UEDA

IPC: G11C5/08 ,  H10B61/00 ,  H10N50/10 ,  G11C11/16

CPC classification number: G11C5/08 ,  H10B61/00 ,  H10N50/10 ,  G11C11/1675

Abstract: According to one embodiment, a magnetic memory includes a first magnetic member extending along a first direction. First and second wires extend along a second direction. The first magnetic member is located between the first and second wirings in plan view from the first direction. A second magnetic member has a first portion above the first and second wirings, a second portion between the first and second wirings, and a third portion below the first and second wirings. At least one of the first portion or the third portion of the second magnetic member has a lower saturation magnetization than the second portion.

公开(公告)号：US20220302370A1

公开(公告)日：2022-09-22

申请号：US17447360

申请日：2021-09-10

Applicant: Kioxia Corporation

Inventor： Nobuyuki UMETSU ,  Yasuaki OOTERA ,  Masaki KADO ,  Michael ARNAUD QUINSAT ,  Naoharu SHIMOMURA ,  Tsutomu NAKANISHI ,  Shiho NAKAMURA ,  Susumu HASHIMOTO ,  Tsuyoshi KONDO

IPC: H01L43/02 ,  H01L27/22 ,  G11C11/16

Abstract: A magnetic memory according to en embodiment includes: a first and second wirings; an insulator portion; a magnetic member including: a first portion electrically connected to the first wiring; a second portion electrically connected to the second wiring; and a third portion disposed between the first and second portions, the magnetic member extending in a first direction from the first portion toward the second portion and surrounding the insulator portion, and in a cross-section parallel to the first direction and including part of the magnetic member and part of the insulator portion, a curvature of the first portion being smaller than a curvature of the third portion, a length of the first portion in the first direction being greater than half a length of the third portion in the first direction; and a control circuit electrically connected to the first and second wirings.

公开(公告)号：US20250022498A1

公开(公告)日：2025-01-16

申请号：US18764581

申请日：2024-07-05

Applicant: Kioxia Corporation

Inventor： Shogo MUTO ,  Masanobu SHIRAKAWA ,  Hideki YAMADA ,  Ryo YAMAKI ,  Yoshihiro UEDA ,  Tsuyoshi KONDO

IPC: G11C11/16 ,  G11C19/08 ,  H10B61/00 ,  H10N50/10

Abstract: A first circuit outputs first information indicating presence/absence of a magnetic wall between two adjacent portions among portions of a magnetic body, and second information based on the combination of magnetization states of the two portions. A first storage circuit stores first bits corresponding to the portions. A most significant bit of the first bits has a value independent of a magnetization state of a corresponding one of the portions, and the first bits have a value based on the first information. A second storage circuit stores the second information. The second circuit causes the first storage circuit to output the first bits when a value of a least significant bit of the first bits matches a value of the second information, and otherwise third bits having inverse values of the first bits.

公开(公告)号：US20230076828A1

公开(公告)日：2023-03-09

申请号：US17693818

申请日：2022-03-14

Applicant: Kioxia Corporation

Inventor： Naoharu SHIMOMURA ,  Nobuyuki UMETSU ,  Tsuyoshi KONDO ,  Yoshihiro UEDA ,  Yasuaki OOTERA ,  Akihito YAMAMOTO ,  Mutsumi OKAJIMA ,  Masaki KADO ,  Tsutomo NAKANISHI ,  Michael Arnaud QUINSAT

IPC: H01L27/22 ,  H01L43/02 ,  G11C11/16

Abstract: A magnetic memory of the present embodiment includes an electrode extending along a plane including a first direction and a second direction, a first wiring extending in the first direction, second wirings between the electrode and the first wiring, extending in the second direction and arranged in the first direction, first magnetic members each including a first part electrically connected to the first wiring and a second part electrically connected to the electrode, extending in a third direction, and being positioned between neighboring two of the second wirings when seen from the third direction, and a control circuit. When writing first information to one first magnetic member, the control circuit supplies first current to at least two second wirings positioned on one side of the one first magnetic member in the first direction.

公开(公告)号：US20230071519A1

公开(公告)日：2023-03-09

申请号：US17681850

申请日：2022-02-28

Applicant: KIOXIA CORPORATION

Inventor： Yoshihiro UEDA ,  Naoharu SHIMOMURA ,  Tsuyoshi KONDO

IPC: H01L43/02 ,  H01L43/10

Abstract: A magnetic memory includes an electrode extending along a plane including first and second directions, first and second wirings extending along the first direction, a first magnetic member including first and second portions coupled to the first wiring and the electrode, a second magnetic member including third and fourth portions coupled to the second wiring and the electrode, the first and second members extending along the third direction, a third wiring extending along the second direction between the electrode and the second and fourth portions, and a circuit configured to supply a current to the third wiring to magnetize in a first magnetization direction a magnetic domain of each of the second and fourth portions, the magnetic domain storing information represented by magnetization directions thereof, and supply a current between the electrode and the first and second wirings to shift the magnetic domains towards the first and third portions.

公开(公告)号：US20240221809A1

公开(公告)日：2024-07-04

申请号：US18461304

申请日：2023-09-05

Applicant: Kioxia Corporation

Inventor： Yasuaki OOTERA ,  Tsutomu NAKANISHI ,  Nobuyuki UMETSU ,  Tomoe NISHIMURA ,  Susumu HASHIMOTO ,  Masaki KADO ,  Tsuyoshi KONDO

IPC: G11C11/16 ,  H10B61/00 ,  H10N50/01 ,  H10N50/10 ,  H10N50/80

CPC classification number: G11C11/161 ,  G11C11/1655 ,  G11C11/1673 ,  G11C11/1675 ,  H10B61/22 ,  H10N50/01 ,  H10N50/10 ,  H10N50/80

Abstract: According to one embodiment, a magnetic memory includes first magnetic members extending in a first direction, first wirings extending in a second direction and spaced from each other in a third direction, and a second magnetic member. The second magnetic member has a first portion above the first wirings, a second portion extending in the second direction between adjacent first wirings, a third portion below the plurality of first wirings, and a fourth portion with a part inside an upper end portion of a first magnetic member. A third wiring extends in the third direction and is connected to lower end portions of first magnetic members.

公开(公告)号：US20230180484A1

公开(公告)日：2023-06-08

申请号：US17845876

申请日：2022-06-21

Applicant: KIOXIA CORPORATION

Inventor： Shiho NAKAMURA ,  Tsuyoshi KONDO ,  Nobuyuki UMETSU

IPC: H01L27/22 ,  G11C5/08 ,  H01L43/02 ,  H01L43/12

CPC classification number: H01L27/228 ,  G11C5/08 ,  H01L43/02 ,  H01L43/12

Abstract: A magnetic memory includes first and second wirings, a magnetic memory line including first and second portions and extending along a first direction, the second portion electrically connected to the first wiring, and a first magnetic member electrically connected to the first portion and the second wiring and including first and second magnetic portions each having an annular shape and overlapping an end portion of the first portion of the memory line as viewed from the first direction, a third magnetic portion having a cylindrical shape and extending between an inner end of the first magnetic portion and an inner end of the second magnetic portion, and a fourth magnetic portion having a cylindrical shape and extending between an outer end of the first magnetic portion and an outer end of the second magnetic portion.

公开(公告)号：US20230309321A1

公开(公告)日：2023-09-28

申请号：US17898255

申请日：2022-08-29

Applicant: KIOXIA CORPORATION

Inventor： Naoharu SHIMOMURA ,  Tsuyoshi KONDO ,  Yoshihiro UEDA ,  Yasuaki OOTERA ,  Akihito YAMAMOTO ,  Mutsumi OKAJIMA ,  Masaki KADO ,  Tsutomu NAKANISHI ,  Nobuyuki UMETSU ,  Michael Arnaud QUINSAT

IPC: H01L27/22 ,  H01L43/02

CPC classification number: H01L27/228 ,  H01L43/02

Abstract: A magnetic memory includes first magnetic members extending along a first direction. First and second wirings are spaced apart from the first magnetic members on a second end side of the first magnetic members. At least one of the first magnetic members is between the first and second wirings in a plan view from the first direction. A second magnetic member has a first portion facing the first wiring and electrically connected to a first magnetic member on one side and a second portion facing the first wiring on an opposite side. The second portion is electrically connected to another first magnetic member. A control circuit causes a current to flow through one of the first wiring or the second wiring when data is written into the first magnetic member that is between the first wiring and the second wiring.