Invention Grant
- Patent Title: Method to make a stitched writer for a giant magneto-resistive head
- Patent Title (中): 为巨型磁阻头制作缝合笔记的方法
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Application No.: US09523993Application Date: 2000-03-13
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Publication No.: US06469874B1Publication Date: 2002-10-22
- Inventor: Cherng-Chyi Han , Mao-Min Chen , Po-Kang Wang , Moris Musa Dovek , Gene Michael Sandler , Jeu-Wei C. Koo
- Applicant: Cherng-Chyi Han , Mao-Min Chen , Po-Kang Wang , Moris Musa Dovek , Gene Michael Sandler , Jeu-Wei C. Koo
- Main IPC: G11B5127
- IPC: G11B5127

Abstract:
A high data-rate stitched pole inductive magnetic write head incorporating a non-magnetic spacer layer and a magnetic pole yoke that is recessed from the magnetic pole tip. Said spacer layer is deposited as part of a self-aligned, patterned photoresist process, wherein the spacer layer is deposited first and the P2 portion of the upper pole assembly is then plated over it to form the pole tip configuration. Increasing the thickness of the spacer layer, while keeping it within a specified tolerance range, allows the upper stitched P3 portion of the pole piece to be recessed relative to the tip of P2. The spacer layer shortens throat height, reduces saturation write current, and improves overwrite and side erasure performance.
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