Invention Grant
- Patent Title: Exchange-coupling film and magnetoresistive element and magnetic detector using the same
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Application No.: US16816957Application Date: 2020-03-12
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Publication No.: US11428757B2Publication Date: 2022-08-30
- Inventor: Masamichi Saito , Hiroaki Endo , Fumihito Koike
- Applicant: Alps Alpine Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Alps Alpine Co., Ltd.
- Current Assignee: Alps Alpine Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Crowell & Moring LLP
- Priority: JPJP2017-186544 20170927,JPJP2018-021263 20180208
- Main IPC: G01R33/09
- IPC: G01R33/09 ; H01F10/30

Abstract:
An exchange-coupling film having a large magnetic field (Hex) at which the magnetization direction of a pinned magnetic layer is reversed, thus exhibiting high stability under high-temperature conditions, and having excellent high-magnetic-field resistance includes an antiferromagnetic layer and a pinned magnetic layer in contact with the antiferromagnetic layer. The antiferromagnetic layer has an alternating multilayer structure of three or more layers, the layers including alternately stacked X1Cr and X2Mn layers, where X1 represents one or more elements selected from the group consisting of platinum group elements and Ni, and X2 represents one or more elements selected from the group consisting of platinum group elements and Ni and may be the same as or different from X1.
Public/Granted literature
- US20200284857A1 EXCHANGE-COUPLING FILM AND MAGNETORESISTIVE ELEMENT AND MAGNETIC DETECTOR USING THE SAME Public/Granted day:2020-09-10
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