发明名称 |
Magnetoresistance effect element, magnetic head, magnetic head assembly, magnetic storage system |
摘要 |
Disclosed are a high-sensitivity and high-reliability magnetoresistance effect device (MR device) in which bias point designing is easy, and also a magnetic head, a magnetic head assembly and a magnetic recording/reproducing system incorporating the MR device. In the MR device incorporating a spin valve film, the magnetization direction of the free layer is at a certain angle to the magnetization direction of a second ferromagnetic layer therein when the applied magnetic field is zero. In this, the pinned magnetic layer comprises a pair of ferromagnetic films as antiferromagnetically coupled to each other via a coupling film existing therebetween. The device is provided with a means of keeping the magnetization direction of either one of the pair of ferromagnetic films constituting the pinned magnetic layer, and with a nonmagnetic high-conductivity layer as disposed adjacent to a first ferromagnetic layer on the side opposite to the side on which the first ferromagnetic layer is contacted with a nonmagnetic spacer layer. With that constitution, the device has extremely high sensitivity, and the bias point in the device is well controlled.
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申请公布号 |
US6338899(B1) |
申请公布日期 |
2002.01.15 |
申请号 |
US19990332440 |
申请日期 |
1999.06.14 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
FUKUZAWA HIDEAKI;KAMIGUCHI YUZO;KOUI KATSUHIKO;NAKAMURA SHIN-ICHI;IWASAKI HITOSHI;SAITO KAZUHIRO;FUKE HIROMI;YOSHIKAWA MASATOSHI;HASHIMOTO SUSUMU;SAHASHI MASASHI |
分类号 |
G11B5/39;G01R33/09;G11B5/66;(IPC1-7):G11B5/66 |
主分类号 |
G11B5/39 |
代理机构 |
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地址 |
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