Magnetic head having magnetic pole with lengthened neck pole...

Details Magnetic head having magnetic pole with lengthened neck pole... Magnetic head having magnetic pole with lengthened neck pole...

2006-11-07

2006-11-07

Tupper, Robert S. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07133255

ABSTRACT:
A magnetic head having a magnetic pole that includes a pole tip and a yoke. The pole tip includes an elongated neck, having an anchor piece on one end and a yoke interconnection piece on the other end. The air bearing surface of the head is located approximately at the midpoint of the elongated neck, and shadowing effects of the end pieces during the ion milling notching process do not create significant variations in the width of the neck at locations near the midpoint of the neck. As a result, variations of the pole tip width at the ABS of fabricated magnetic heads is significantly reduced, and processing yield is therefore increased. The yoke is engaged to the pole tip at a location along the neck that is close to the air bearing surface. In a preferred embodiment, the yoke interconnect piece is encapsulated within the yoke.

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