Method of manufacturing a magnetic write head mold for neck...

Details Method of manufacturing a magnetic write head mold for neck... Method of manufacturing a magnetic write head mold for neck...

2011-07-12

2011-07-12

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C216S039000, C216S042000, C427S404000, C427S419200

Reexamination Certificate

active

07975366

ABSTRACT:
A process to reduce the bevel angle in a mold used to form a write head is disclosed. First, tantalum is used instead of alumina for the yoke area. Then both the tantalum and the alumina areas are simultaneously subjected to reactive ion etching, leading to sloping sidewalls in the alumina area (write pole) while providing near vertical sidewalls in the tantalum (yoke) area. Consequently, the neck height is the same at the cavity floor as it is at the cavity top.

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