Invention Grant
US07029771B2 Magnetic sensor having free layer additionally provided with magnetic anisotropy by shape anisotropy
失效
具有自由层的磁传感器通过形状各向异性另外具有磁各向异性
- Patent Title: Magnetic sensor having free layer additionally provided with magnetic anisotropy by shape anisotropy
- Patent Title (中): 具有自由层的磁传感器通过形状各向异性另外具有磁各向异性
-
Application No.: US10671970Application Date: 2003-09-26
-
Publication No.: US07029771B2Publication Date: 2006-04-18
- Inventor: Naoya Hasegawa , Eiji Umetsu , Masamichi Saito , Yosuke Ide
- Applicant: Naoya Hasegawa , Eiji Umetsu , Masamichi Saito , Yosuke Ide
- Applicant Address: JP Tokyo
- Assignee: Alps Electric Co., Ltd.
- Current Assignee: Alps Electric Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2002-293365 20021007; JP2003-048727 20030226
- Main IPC: G11B5/127
- IPC: G11B5/127

Abstract:
An intermediate region is formed at a central portion of an element in a track width direction, and an antiferromagnetic layer is not provided at the intermediate region. Accordingly, a sense current can be prevented from being shunted to the intermediate region, and as a result, improvement in reproduction output and strength against magnetic electrostatic damage can be realized. In addition, since the thickness of the central portion of the element is decreased, trend toward narrower gap can be realized. Furthermore, since the direction of magnetization of a free magnetic layer is oriented in the track width direction by shape anisotropy, means for orienting the magnetization is not necessary, and hence the structure and manufacturing method of the element can be simplified.
Public/Granted literature
- US20040067389A1 Magnetic sensor having free layer additionally provided with magnetic anisotropy by shape anisotropy Public/Granted day:2004-04-08
Information query
IPC分类: