Submicron thin film inductive head with self-aligned staggered p

Details Submicron thin film inductive head with self-aligned staggered p Submicron thin film inductive head with self-aligned staggered p

1992-12-29

1994-12-20

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Gap spacer

360125, 360126, G11B 523, G11B 5127, G11B 5147

Patent

active

053750233

ABSTRACT:
A thin film inductive head having staggered pole-tips with a self-aligned recording gap region. The recording gap region is bounded by stepped pole-tip element with the steps made large with respect to the gap thickness. The pole-tip layers extend back from the air bearing surface to form a throat region that is also large with respect to the gap thickness. The self-aligned staggered pole-tip geometry is suitable for submicron track widths because the pole-tips may themselves be much wider and the self-aligned configuration avoids submicron masking and registration difficulties. The stepped pole-tip surfaces also eliminate the side-writing problem known in the art for overlapping thin film poles.

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"Thin Film Head With Staggered Pole Tips", by Wang et al, IEEE Transactions on Magnetics, vol. 27, No. 6, Nov. 1991, pp. 4710-4712.

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