发明名称 |
MR thin film head with longitudinal-biasing multi-layers of antiferromagnetically-coupled high and low coercivity layers |
摘要 |
A thin film head includes a GMR element formed of an antiferromagnetic layer, a pinning layer, a nonmagnetic conductive layer, a free magnetic layer, and a pair of the right and the left laminated longitudinal biasing layers. Each of the biasing layers contains a high coercivity ferromagnetic layer, a nonmagnetic layer and a low coercivity ferromagnetic layer provided on the free magnetic layer of the GMR element. The high coercivity ferromagnetic layer and low coercivity ferromagnetic layer are antiferromagnetically exchange-coupled via the nonmagnetic layer, and the high coercivity ferromagnetic layer and free magnetic layer located next to the high coercivity ferromagnetic layer are ferromagnetically coupled.</PTEXT>
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申请公布号 |
US6633466(B2) |
申请公布日期 |
2003.10.14 |
申请号 |
US20000737091 |
申请日期 |
2000.12.14 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SAKAGUCI MASAYA;FUKAZAWA TOSHIO |
分类号 |
G11B5/31;G11B5/39;G11B5/40;(IPC1-7):G11B5/39 |
主分类号 |
G11B5/31 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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