Dynamic magnetic information storage or retrieval – Head – Core
Patent
1996-05-01
1998-05-05
Levy, Stuart S.
Dynamic magnetic information storage or retrieval
Head
Core
G11B 5147
Patent
active
057484171
ABSTRACT:
A thin film magnetic head is fabricated on a substrate by depositing a seed layer on the substrate. This seed layer is advantageously used as a common seed for a plurality of magnetic head related structures which are built-up on the substrate. A lower magnetic layer is plated on the substrate in an opening provided in an insulative layer which is deposited on the substrate. The aforementioned seed layer is used as the seed for this lower magnetic layer. A plurality of magnetic layers are plated at one end of the lower magnetic layer to build-up and form a first side pole by using the above seed layer as a seed. Another plurality of magnetic layers are plated at the other end of the lower magnetic layer to build-up and form a second side pole by using the same seed layer as a seed. The first and second side poles thus formed include upper and lower ends, the lower ends being plated to the ends of the lower magnetic layer. A first upper pole is plated to the upper end of the first side pole. The first upper pole includes a gap end facing the second side pole. A gap region of nonmagnetic material is deposited adjacent the gap end of the first upper pole. A second upper pole is plated to the upper end of the second side pole and includes a gap end adjacent the gap region.
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Ang Jane
Gray G. Robert
Malhotra Arun
Watterston James
AIWA Research and Development Inc.
Koestner Ken J.
Korzuch William R.
Levy Stuart S.
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