Method for fabricating magnetic recording poles
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United States of America Patent
Stats
-
Mar 27, 1990
Grant Date -
N/A
app pub date -
Mar 9, 1988
filing date -
Mar 9, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The poles are suited for mounting on the side of a slider carrying a magnetic head. The method allows very narrow gaps between poles. In one embodiment of the invention, a magnetic pole is deposited on a substrate. A nonmagnetic material such as Al.sub.2 O.sub.3 is deposited from the side onto the pole and substrate. A preselected pattern of photoresist is next deposited on the nonmagnetic layer and a second magnetic material is deposited. The photoresist is removed and excess magnetic material is removed by ion milling from the side opposite to that of the nonmagnetic material deposition. Another embodiment is disclosed for making two- and three-pole heads.
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