公开(公告)号：US20240069071A1

公开(公告)日：2024-02-29

申请号：US18166572

申请日：2023-02-09

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Satoshi SHIROTORI ,  Akira KIKITSU ,  Yoshihiro HIGASHI

IPC: G01R15/20 ,  G01R31/382

CPC classification number: G01R15/20 ,  G01R31/382

Abstract: According to one embodiment, a magnetic sensor includes a first element portion that includes a first magnetic element, a first conductive member, a first magnetic member and a first opposing magnetic member. The first magnetic element includes a first end portion and a first other end portion. A direction from the first end portion to the first other end portion is along a first direction. A second direction from the first conductive member to the first magnetic element crosses the first direction. A third direction from the first magnetic member to the first opposing magnetic member crosses a plane including the first and second directions. At least a part of the first magnetic element is between the first magnetic member and the first opposing magnetic member in position in the third direction. The first magnetic member includes a first other magnetic portion and a first magnetic portion.

公开(公告)号：US20230266411A1

公开(公告)日：2023-08-24

申请号：US17870371

申请日：2022-07-21

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akira KIKITSU ,  Yoshihiro HIGASHI ,  Satoshi SHIROTORI

IPC: G01R33/09 ,  G01D5/16 ,  H01L43/08

CPC classification number: G01R33/093 ,  G01D5/16 ,  H01L43/08

Abstract: According to one embodiment, a sensor includes an element portion and a controller. The element portion includes a first element. The first element includes a first magnetic element and a first conductive member. The first magnetic element includes a first magnetic layer and a first opposed magnetic layer. The first conductive member includes a first conductive portion and a first other conductive portion. The controller includes a first circuit. The first circuit is connected to the first conductive portion and the first other conductive portion. The first circuit is configured to supply a first current to the first conductive member. The first current includes an alternating current component. A local minimum value of the first current is of a first polarity, and a local maximum value of the first current is of the first polarity.

公开(公告)号：US20210286026A1

公开(公告)日：2021-09-16

申请号：US17019652

申请日：2020-09-14

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hitoshi IWASAKI ,  Akira KIKITSU ,  Yoshihiro HIGASHI ,  Satoshi SHIROTORI

IPC: G01R33/09

Abstract: According to one embodiment, a magnetic sensor includes a first magnetic part, a first magnetic member, a second magnetic part, a second magnetic member, a first element, a second element, a third element, a fourth element, and a first interconnect. The first magnetic part includes first, second, and third portions. The first portion is between the second and third portions. The second magnetic part includes fourth, fifth, and sixth portions. The fourth portion is between the fifth and sixth portions. The first element includes a first magnetic layer. The second element includes a second magnetic layer. The third element includes a third magnetic layer. The fourth element includes a fourth magnetic layer. The first interconnect includes first and second interconnect portions.

公开(公告)号：US20210038109A1

公开(公告)日：2021-02-11

申请号：US17082333

申请日：2020-10-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hitoshi IWASAKI ,  Akira KIKITSU ,  Satoshi SHIROTORI

IPC: A61B5/05 ,  A61B5/04 ,  G01N33/483 ,  G01N27/72

Abstract: According to one embodiment, a magnetic sensor includes a first sensor element and a first interconnect. The first sensor element includes a first magnetic layer, a first opposing magnetic layer, and a first nonmagnetic layer provided between the first magnetic layer and the first opposing magnetic layer. A first magnetization of the first magnetic layer is aligned with a first length direction crossing a first stacking direction from the first magnetic layer toward the first opposing magnetic layer. At least a portion of the first interconnect extends along the first length direction. The first interconnect cross direction crosses the first length direction and is from the first sensor element toward the portion of the first interconnect. A first electrical resistance of the first sensor element changes according to an alternating current flowing in the first interconnect and a sensed magnetic field applied to the first sensor element.

公开(公告)号：US20200227358A1

公开(公告)日：2020-07-16

申请号：US16562652

申请日：2019-09-06

Applicant: KABUSHIKI KAISHA TOSHIBA ,  SHIBAURA MECHATRONICS CORPORATION

Inventor： Akira KIKITSU ,  Yoshinari KUROSAKI ,  Kenicharo YAMADA ,  Shigeki MATSUNAKA

IPC: H01L23/552 ,  H01F10/16 ,  H01F10/14 ,  H01F10/30

Abstract: According to one embodiment, an electromagnetic wave attenuator includes a plurality of magnetic layers, and a plurality of nonmagnetic layers. The plurality of nonmagnetic layers is conductive. A direction from one of the plurality of magnetic layers toward an other one of the plurality of magnetic layers is aligned with a first direction. One of the plurality of nonmagnetic layers is between the one of the plurality of magnetic layers and the other one of the plurality of magnetic layers. A first thickness along the first direction of the one of the plurality of magnetic layers is not less than ½ times a second thickness along the first direction of the one of the plurality of nonmagnetic layers.

公开(公告)号：US20200066608A1

公开(公告)日：2020-02-27

申请号：US16299462

申请日：2019-03-12

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akira KIKITSU ,  Yoshinari KUROSAKI ,  Kenichiro YAMADA

IPC: H01L23/29 ,  H01L23/552 ,  H01L23/31 ,  H05K1/02 ,  G11B5/708 ,  H05K9/00

Abstract: According to one embodiment, an electronic device includes first to third members, first and second elements. The second member is between the first and third members. The first element is between the first and second members. The second element is between the second and third members. The first member includes first nonmagnetic layers and a first magnetic layer. The first magnetic layer is provided between one of the first nonmagnetic layers and an other one of the first nonmagnetic layers. The second member includes second nonmagnetic layers and a second magnetic layer. The second magnetic layer is provided between one of the second nonmagnetic layers and an other one of the second nonmagnetic layers. The third member includes third nonmagnetic layers and a third magnetic layer. The third magnetic layer is provided between one of the third nonmagnetic layers and an other one of the third nonmagnetic layers.

公开(公告)号：US20170212188A1

公开(公告)日：2017-07-27

申请号：US15258464

申请日：2016-09-07

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akira KIKITSU ,  Hitoshi IWASAKI ,  Satoshi SHIROTORI

IPC: G01R33/09 ,  A61B5/04 ,  A61B5/00 ,  G01R33/025

CPC classification number: G01R33/091 ,  A61B5/04007 ,  A61B5/04008 ,  A61B2562/0223 ,  A61B2562/066 ,  G01R33/025 ,  G01R33/093

Abstract: A magnetic sensor of an embodiment includes: a magnetic field detector including a magnetic layer in which a length in a first direction is 10 times or more of a length in a second direction perpendicular to the first direction and a length in a third direction perpendicular to the first direction and the second direction is ½ or less of the length in the second direction; a first magnetic material member arranged along the first direction, and in which a length in the third direction is longer than the length in the third direction of the magnetic layer; a first nonmagnetic insulating layer arranged between the magnetic field detector and the first magnetic material member, and in which a length in the second direction is ½ or less of the length in the second direction of the magnetic layer; and a circuit supplying current to the magnetic layer.

公开(公告)号：US20240257829A1

公开(公告)日：2024-08-01

申请号：US18354959

申请日：2023-07-19

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Satoshi SHIROTORI ,  Tazumi NAGASAWA ,  Akira KIKITSU ,  Yoshihiro HIGASHI

IPC: G11B5/11 ,  G11B5/127 ,  G11B5/48

CPC classification number: G11B5/11 ,  G11B5/1272 ,  G11B5/486

Abstract: According to one embodiment, a magnetic head includes first to fourth shields, first to fourth terminals, and first magnetic member. The third shield includes a first partial region and a second partial region. The fourth shield includes a third partial region and a fourth partial region. The first magnetic member is provided between a portion of the first shield and a portion of the second shield in a first direction from the first shield to the second shield. The first magnetic member is provided between the first partial region and the third partial region in a second direction crossing the first direction. The portion of the first shield is located between the second partial region and the fourth partial region in the second direction.

公开(公告)号：US20230041879A1

公开(公告)日：2023-02-09

申请号：US17672097

申请日：2022-02-15

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akira KIKITSU ,  Satoshi SHIROTORI ,  Yoshihiro HIGASHI ,  Yoshinari KUROSAKI

IPC: G01R27/02 ,  G01R25/00 ,  G01R31/382

Abstract: According to one embodiment, a sensor includes an element part, and a control circuit part. The element part includes first and second elements. Each of the first and second elements includes a first magnetic element and a first conductive member. The control circuit part includes a first current circuit, a differential circuit, and a phase detection circuit. The first current circuit is configured to supply a first current to the first conductive member. The differential circuit is configured to output a differential signal corresponding to a difference of a first signal and a second signal. The first signal corresponds to a change in a first electrical resistance of the first magnetic element of the first element, The second signal corresponds to a change in a second electrical resistance of the first magnetic element of the second element. The phase detection circuit is configured to perform a phase detection of the differential signal.

公开(公告)号：US20220221536A1

公开(公告)日：2022-07-14

申请号：US17405920

申请日：2021-08-18

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Akira KIKITSU ,  Satoshi SHIROTORI ,  Yoshihiro HIGASHI ,  Yoshinari KUROSAKI ,  Hitoshi IWASAKI

IPC: G01R33/09 ,  G01R33/00

Abstract: According to one embodiment, a magnetic sensor includes a base body including a base body end portion, a magnetic member, and an element part. A direction from the base body toward the magnetic member is along a first direction. The element part includes first and second magnetic elements. An orientation from the first magnetic element toward the second magnetic element is along a second direction crossing the first direction. A portion of the first magnetic element and a portion of the second magnetic element are between the base body and the magnetic member. A position in a third direction of an other portion of the first magnetic element and a position in the third direction of an other portion of the second magnetic element are between a position in the third direction of the base body end portion and a position in the third direction of the magnetic member.