发明名称 |
Process for producing a pole-trimmed writer in a magnetoresistive read/write head and a data transducer made thereby |
摘要 |
A pole-trimmed writer for an MR read/write data transducer which may be produced without significant re-deposition of Al2O3 or NiFe on the sides of the writer poles. The process disclosed herein advantageously provides an upper (top) pole which is processed to project a pair of relatively thin, laterally extending lower flanges, prior to the use of the upper pole as a mask to subsequent ion milling of the lower pole, or shared shield. In a preferred embodiment, the process for producing the flange is implemented in conjunction with the deposition of a single copper (Cu) or dual Al2O3 and chromium (Cr) overlayers formed on the upper pole seed layer followed by the top pole formation and selective removal of a predetermined amount of the underlying portions of the gap material prior to a subsequent ion milling operation and further processing of the read/write head.
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申请公布号 |
US6141183(A) |
申请公布日期 |
2000.10.31 |
申请号 |
US19980115147 |
申请日期 |
1998.07.14 |
申请人 |
MATSUSHITA-KOTOBUKIE ELECTRONICS INDUSTRIES, LTD. |
发明人 |
WU, ANDREW L.;DUVAL, PAUL;FERRAGUTO, THOMAS |
分类号 |
G11B5/23;G11B5/31;G11B5/39;(IPC1-7):G11B5/39 |
主分类号 |
G11B5/23 |
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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