公开(公告)号：US12178138B2

公开(公告)日：2024-12-24

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: G11C16/04 ,  G11C11/16 ,  H10B61/00 ,  H10N50/80 ,  H10N50/01

Abstract: A magnetic memory 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：US11417831B2

公开(公告)日：2022-08-16

申请号：US16538974

申请日：2019-08-13

Applicant: KIOXIA CORPORATION

Inventor： Nobuyuki Umetsu ,  Tsuyoshi Kondo ,  Masaki Kado ,  Shiho Nakamura ,  Susumu Hashimoto ,  Yasuaki Ootera ,  Michael Arnaud Quinsat ,  Masahiro Koike ,  Tsutomu Nakanishi ,  Megumi Yakabe ,  Agung Setiadi

IPC: H01L27/22 ,  H01L43/02 ,  G11C11/16 ,  H01L43/10 ,  H01L43/08

Abstract: A magnetic memory according to an embodiment includes: a magnetic member including a first to third magnetic parts, the first magnetic part including a first portion and a second portion and extending in a first direction from the first portion to the second portion, the second magnetic part extending in a second direction that crosses the first direction, and the third magnetic part connecting the second magnetic part and the first portion; a first nonmagnetic metal layer arranged along the third magnetic part, the first nonmagnetic metal layer including a first end portion on a side of the second portion, a position of the first end portion along the first direction being between positions of the first and second portions along the first direction; and a first and second electrodes supplying a current between the first and second magnetic parts via the third magnetic part.

公开(公告)号：US11232822B2

公开(公告)日：2022-01-25

申请号：US17010455

申请日：2020-09-02

Applicant: KIOXIA CORPORATION

Inventor： Michael Arnaud Quinsat ,  Tsuyoshi Kondo ,  Masahiro Koike ,  Shiho Nakamura ,  Susumu Hashimoto ,  Masaki Kado ,  Nobuyuki Umetsu ,  Yasuaki Ootera ,  Megumi Yakabe ,  Agung Setiadi ,  Shigeyuki Hirayama ,  Yoshihiro Ueda ,  Tsutomu Nakanishi

IPC: G11C11/16

Abstract: According to one embodiment, a magnetic memory includes a magnetic body with two portions of a first dimension in a first direction which are spaced from each other a second direction and another portion that has a second dimension less than the first dimension in the first direction, which is between the two other portions. A circuit supplies a shift pulse to the magnetic body. The shift pulse includes a first pulse and a second pulse and moves a domain wall in the magnetic body along the second direction. The first pulse has a first pulse width. The second pulse has a second pulse width less than the first pulse width. The second pulse is supplied to the magnetic body after the first pulse.

公开(公告)号：US11871586B2

公开(公告)日：2024-01-09

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: G11C19/08 ,  H10B61/00 ,  H10N50/80 ,  G11C11/16

CPC classification number: H10B61/22 ,  G11C11/161 ,  G11C11/1675 ,  H10N50/80 ,  G11C19/08

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：US11610617B2

公开(公告)日：2023-03-21

申请号：US17349350

申请日：2021-06-16

Applicant: Kioxia Corporation

Inventor： Naoharu Shimomura ,  Michael Arnaud Quinsat ,  Masahiro Koike

IPC: G11C11/16 ,  H01L27/22 ,  G11C11/18 ,  H01L43/06 ,  H01L43/02

Abstract: A magnetic memory according to an embodiment includes: a first wiring and a second wiring; a first magnetic member having 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 a first direction from the first portion to the second portion; a third wiring that is electrically insulated from the first magnetic member; and a control circuit electrically connected to the first wiring, the second wiring, and the third wiring, the control circuit supplying a current pulse, in which a trailing time is longer than a rising time, to the third wiring.

公开(公告)号：US11227646B2

公开(公告)日：2022-01-18

申请号：US17018332

申请日：2020-09-11

Applicant: Kioxia Corporation

Inventor： Masahiro Koike ,  Michael Arnaud Quinsat ,  Nobuyuki Umetsu ,  Tsutomu Nakanishi ,  Yasuaki Ootera ,  Tsuyoshi Kondo

IPC: G11C11/16 ,  G11C5/06 ,  H01L27/22

Abstract: According to one embodiment, a device includes a member including a first portion having a first dimension in first direction, a second portion spaced from the first portion and having a second dimension in the first direction, a third portion between the first and second portions and having a third dimension in the first direction, and a fourth portion between the first and third portions and having a fourth dimension in the first direction; and a circuit to supply a shift pulse including first and second pulses to the member and move a domain wall in the member. The third dimension is less than the first dimension. The second and fourth dimensions are less than the third dimension. A second value of the second pulse is less than a first value of the first pulse.

公开(公告)号：US12041788B2

公开(公告)日：2024-07-16

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: H10B61/00 ,  H10N50/01 ,  H10N50/10 ,  H10N50/80

CPC classification number: H10B61/22 ,  H10N50/01 ,  H10N50/10 ,  H10N50/80

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：US20210295889A1

公开(公告)日：2021-09-23

申请号：US17018332

申请日：2020-09-11

Applicant: Kioxia Corporation

Inventor： Masahiro Koike ,  Michael Arnaud Quinsat ,  Nobuyuki Umetsu ,  Tsutomu Nakanishi ,  Yasuaki Ootera ,  Tsuyoshi Kondo

IPC: G11C11/16 ,  H01L27/22 ,  G11C5/06

Abstract: According to one embodiment, a device includes a member including a first portion having a first dimension in first direction, a second portion spaced from the first portion and having a second dimension in the first direction, a third portion between the first and second portions and having a third dimension in the first direction, and a fourth portion between the first and third portions and having a fourth dimension in the first direction; and a circuit to supply a shift pulse including first and second pulses to the member and move a domain wall in the member. The third dimension is less than the first dimension. The second and fourth dimensions are less than the third dimension. A second value of the second pulse is less than a first value of the first pulse.

公开(公告)号：US11120858B2

公开(公告)日：2021-09-14

申请号：US16914511

申请日：2020-06-29

Applicant: Kioxia Corporation

Inventor： Yoshihiro Ueda ,  Michael Arnaud Quinsat

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

Abstract: A magnetic memory according to an embodiment includes: a first wiring; a second wiring; a first switching element disposed between the first wiring and the second wiring; a first magnetic member extending in a first direction and disposed between the first switching element and the second wiring; a third wiring disposed between the first magnetic member and the second wiring; a first magnetoresistive element disposed between the third wiring and the second wiring; and a second switching element disposed between the first magnetoresistive element and the second wiring.