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：US12274075B2

公开(公告)日：2025-04-08

申请号：US17845876

申请日：2022-06-21

Applicant: KIOXIA CORPORATION

Inventor： Shiho Nakamura ,  Tsuyoshi Kondo ,  Nobuyuki Umetsu

IPC: H10N50/80 ,  G11C5/08 ,  H10B61/00 ,  H10N50/01

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：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：US20210249061A1

公开(公告)日：2021-08-12

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.