发明名称 |
Magnetic head with improved supporter for perpendicular magnetization recording |
摘要 |
In a magnetic head of perpendicular magnetization type having main and sub magnetic poles arranged at both sides of a recording medium, a nonmagnetic supporter holding a high permeability magnetic thin layer of the main magnetic pole is formed by a polycrystalline sintered body substantially composed of titanium carbide and alumina. This polycrystalline sintered product well matches with a recording medium having a cobalt-chromium alloy layer so that the recording medium does not wear for a long time of use, and therefore, so that the contact surface of the main magnetic pole is hardly damaged. The same sintered body may also be used for the sub magnetic pole arranged to be in contact with the recording medium. Some structural improvements are also provided so that undesirable influence due to an adhesive layer adjacent to the magnetic thin layer is removed. One or more additional thin layers may be provided for reducing crosstalk between adjacent tracks. A magnetically shielding block is provided to prevent undesirable influence caused by an external magnetic field.
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申请公布号 |
US4796134(A) |
申请公布日期 |
1989.01.03 |
申请号 |
US19870127538 |
申请日期 |
1987.11.30 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
WATANABE, YOSHIO;NAKAYAMA, YASUHIKO;FURUYA, NOBUAKI;MIYAMA, HIROSHI |
分类号 |
G11B5/127;G11B5/31;(IPC1-7):G11B5/127;G11B5/187 |
主分类号 |
G11B5/127 |
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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