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：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：US20220310613A1

公开(公告)日：2022-09-29

申请号：US17472190

申请日：2021-09-10

Applicant: Kioxia Corporation

Inventor： Mutsumi OKAJIMA ,  Yasuaki OOTERA ,  Tsutomu NAKANISHI

IPC: H01L27/108 ,  H01L29/24 ,  H01L29/786 ,  H01L21/02 ,  H01L29/66

Abstract: According to one embodiment, a device includes: a circuit on a first surface of a substrate and including a first contact; an aluminum oxide layer above the substrate in a first direction perpendicular to the first surface; a cell including a capacitor provided in the aluminum oxide layer; a first conductive layer provided between the substrate and the aluminum oxide layer in the first direction and connected to the cell; a first insulating layer between the first conductive layer and the substrate in the first direction; a second insulating layer adjacent to the aluminum oxide layer in a second direction parallel to the first surface and provided above the substrate in the first direction; and a second contact in the second insulating layer and above the first contact in the first direction to connect the cell to the first contact.

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：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：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.

公开(公告)号：US20220302208A1

公开(公告)日：2022-09-22

申请号：US17467095

申请日：2021-09-03

Applicant: Kioxia Corporation

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

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

Abstract: A storage device includes: a memory unit and a first pillar. The first pillar includes: a first region having a third portion between a first and a second portion respectively having a first and a second maximum diameter, and having a first minimum diameter, the first and second portions defining a first distance; a second region having a sixth portion between a fourth and a fifth portion respectively having a third and a fourth maximum diameter, and having a second minimum diameter, the fourth and fifth portions defining a second distance; and a third region between the first and second regions, having a ninth portion between a seventh and an eighth portion respectively having a fifth and a sixth maximum diameter, and having a third minimum diameter, the seventh and eighth portions defining a third distance shorter than each of the first and second distances.

公开(公告)号：US20220077383A1

公开(公告)日：2022-03-10

申请号：US17196737

申请日：2021-03-09

Applicant: Kioxia Corporation

Inventor： Tsuyoshi KONDO ,  Nobuyuki UMETSU ,  Yasuaki OOTERA ,  Tsutomu NAKANISHI ,  Shigeyuki HIRAYAMA

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

Abstract: A magnetic memory according to an embodiment includes: a first wiring and a second wiring; a nonmagnetic conductor extending in a first direction; a first magnetic member including a first portion electrically connected to the first wiring and a second portion electrically connected to the second wiring, the first magnetic member extending in the first direction from the first portion to the second portion to surround the nonmagnetic conductor; an insulation portion disposed between the nonmagnetic conductor and the first magnetic member; and a controller electrically connected to the nonmagnetic conductor, the first wiring, and the second wiring.