Giant magnetoresistive device with buffer-oxide layer...

Details Giant magnetoresistive device with buffer-oxide layer... Giant magnetoresistive device with buffer-oxide layer...

2002-07-19

2008-09-16

Renner, Craig A (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S324110

Reexamination Certificate

active

07426097

ABSTRACT:
An enhanced giant magnetoresistive device, and a method of manufacturing the same. The enhanced giant magnetoresistive (GMR) device includes a substrate over which is formed a seed layer. A buffer-oxide layer is formed over the seed layer. Formed over the buffer-oxide layer is a GMR stack. The GMR stack is formed as a three layer sandwich in which the two outside layers are fabricated from ferromagnetic materials, and the inner layer or spacer layer is formed from non-magnetic, conducting materials. The GMR stack may also take the form of spin valves, and/or other GMR stacks. The buffer-oxide layer may be various thicknesses and provide desirable texturing or non-waviness, both of which may allow for a thin spacer layer. Further, the buffer-oxide layer may be configured to prevent Néel-type-orange-peel coupling from dominating RKKY coupling in the GMR device, which may allow for a thin spacer layer.

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