METHOD FOR PROVIDING A MAGNETIC RECORDING TRANSDUCER INCLUDING A WRAPAROUND SHIELD AND A RECTANGULAR POLE
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United States of America Patent
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Issued Date -
Jun 26, 2014
app pub date -
Dec 21, 2012
filing date -
Dec 21, 2012
priority date (Note) -
Abandoned
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Abstract
A method fabricates a magnetic transducer having an ABS location. Etch stop and nonmagnetic etchable layers are provided. A side shield layer is provided between the ABS location and the etch stop and etchable layers. Part of the side shield and etchable layers are removed using a first removal process. This portion of the pole trench formed has a top wider than the bottom in the side shield layer. Part of the etchable layer is removed using a second removal process, thereby forming the pole trench. The pole trench has a bottom and a top wider than the bottom in the side shield layer and substantially perpendicular sidewalls in the etchable layer. A nonmagnetic side gap layer is provided. A remaining portion of the pole trench has a location and profile for a pole. At least part of the pole is in the pole trench.
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