公开(公告)号：US20220381853A1

公开(公告)日：2022-12-01

申请号：US17596213

申请日：2020-11-17

Applicant: SHOWA DENKO K.K.

Inventor： Daizo ENDO ,  Tatsunori SHINO ,  Akira SAKAWAKI ,  Sho TONEGAWA ,  Yasumasa WATANABE

IPC: G01R33/06

Abstract: A magnetic sensor includes: a non-magnetic substrate; and a sensitive element 31 having a longitudinal direction and a short direction, provided with uniaxial magnetic anisotropy in a direction crossing the longitudinal direction, and sensing a magnetic field by a magnetic impedance effect, wherein the sensitive element 31 includes plural soft magnetic material layers 105a to 105d and plural non-magnetic material layers 106a to 106c configured with a non-magnetic material and laminated between the plural soft magnetic material layers 105a to 105d, and the soft magnetic material layers 105a to 105d facing each other with each of the non-magnetic material layers 106a to 106c interposed therebetween are antiferromagnetically coupled.

公开(公告)号：US20220196762A1

公开(公告)日：2022-06-23

申请号：US17457299

申请日：2021-12-02

Applicant: SHOWA DENKO K.K

Inventor： Daizo ENDO ,  Hiroyuki TOMITA

IPC: G01R33/06

Abstract: The sensitivity of a magnetic sensor using a sensitive element sensing a magnetic field by the magnetic impedance effect is increased. The magnetic sensor includes: a sensitive element sensing a magnetic field by a magnetic impedance effect; and a focusing member provided to face the sensitive element, configured with a soft magnetic material, and focusing magnetic force lines from outside onto the sensitive element.

公开(公告)号：US20220099760A1

公开(公告)日：2022-03-31

申请号：US17465236

申请日：2021-09-02

Applicant: SHOWA DENKO K.K.

Inventor： Daizo ENDO ,  Akira Sakawaki

IPC: G01R33/00

Abstract: Reduction of the S/N in an output from a magnetic sensor using the magnetic impedance effect is suppressed. A magnetic sensor 1 is provided with a sensitive element 31 including: plural soft magnetic material layers 105; and a nonmagnetic amorphous metal layer 106 provided between the plural soft magnetic material layers 105, wherein the soft magnetic material layers 105 facing each other with the nonmagnetic amorphous metal layer 106 interposed therebetween are antiferromagnetically coupled to sense a magnetic field by a magnetic impedance effect.

公开(公告)号：US20210141035A1

公开(公告)日：2021-05-13

申请号：US16621332

申请日：2018-04-06

Applicant: SHOWA DENKO K.K.

Inventor： Daizo ENDO

IPC: G01R33/06 ,  G01R33/00

Abstract: A magnetic sensor 1 is provided with: a thin film magnet 20 configured with a hard magnetic material and having magnetic anisotropy in an in-plane direction; a sensitive part 30 including a sensitive element 31 configured with a soft magnetic material and disposed to face the thin film magnet 30, the sensitive element 31 having a longitudinal direction in which a magnetic flux generated by the thin film magnet 20 passes through and a short direction, having uniaxial magnetic anisotropy in a direction crossing the longitudinal direction, and sensing a change in a magnetic field; and a control layer 102 disposed on a side of the thin film magnet 20 opposite to a side of the thin film magnet 20 on which the sensitive element 31 is provided, the control layer 102 controlling the magnetic anisotropy of the thin film magnet 20 to be directed in the in-plane direction.