发明名称 |
Magneto-resistance effect-type magnetic head |
摘要 |
A magneto-resistance effect-type magnetic head according to the present invention can generate a high reproduction output by increasing a quantity of magnetic flux passing across an effective magneto-sensitive zone of a magneto-resistance effect element, while maintaining its inherent functions as a means for preventing unnecessary magnetic flux from entering the MR element or as a recording pole. The magneto-resistance effect-type magnetic head for reproducing signals from a magnetic recording medium, includes a magneto-resistance effect element, upper and lower magnetic layers between which the magneto-resistance effect element is interposed, and a low-permeability magnetic layer provided on at least one of surfaces of the upper and lower magnetic layers which surfaces are opposed to the magneto-resistance effect element, the low-permeability magnetic layer having a magnetic permeability not more than half of a magnetic permeability of the upper or lower magnetic layer.
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申请公布号 |
US5825594(A) |
申请公布日期 |
1998.10.20 |
申请号 |
US19960744639 |
申请日期 |
1996.11.06 |
申请人 |
SONY CORPORATION |
发明人 |
FUKUMOTO, KOJI;SODA, YUTAKA;SAITO, NORIO;SHIBATA, TAKUJI |
分类号 |
G11B5/31;G11B5/39;(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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