Magnetoresistive effect head with individual layers satisfying a

Details Magnetoresistive effect head with individual layers satisfying a Magnetoresistive effect head with individual layers satisfying a

1996-01-31

1999-04-06

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 539

Patent

active

058926410

ABSTRACT:
A central region susceptible to medium magnetic field is formed. End regions (13 to 15) sandwich and extend from the ends of the central region, and apply a vertical bias to the central region. These regions are formed on a substrate (1 to 5). The central region comprises a laminate layer having a SAL layer (5), a magnetic separation layer (6), a magnetoresistance layer (8), and an insulating layer (9), these layers being nearer the substrate in the mentioned order. The thicknesses of the individual layers, particularly the thickness of the insulating layer, are controlled to satisfy a relation of the thicknesses and ion milling rates of the layers given as:

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