Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2005-09-13
2005-09-13
Watko, Julie Anne (Department: 2653)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
06943995
ABSTRACT:
To form a spin valve device, start by forming a gap layer. Form a buffer layer with a layer of refractory material on the buffer layer. Form patterned underlayers including a magnetic material for providing trackwidth and longitudinal bias on the buffer layer comprising either a lower antiferromagnetic layer stacked with a ferromagnetic layer or a Cr layer stacked with a permanent magnetic layer. Form an inwardly tapered depression in the patterned underlayers down to the buffer layer by either ion milling through a mask or a stencil lift off technique. Form layers covering the patterned underlayers that cover the inwardly tapered depression. Form free, pinned, spacer and antiferromagnetic layers. Form conductors either on a surface of the antiferromagnetic layer aside from the depression or between the buffer layer and the patterned underlayers.
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Dovek Moris Musa
Min Tai
Wang Po-Kang
Ackerman Stephen B.
Headway Technologies Inc.
Jones Graham S.
Saile George O.
Watko Julie Anne
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