Magnetic head with magnetic domain control structure having...

Details Magnetic head with magnetic domain control structure having... Magnetic head with magnetic domain control structure having...

2007-06-12

2007-06-12

Heinz, A. J. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

10771312

ABSTRACT:
A magneto-resistive effect head including: an antiferromagnetic layer; a pinned layer which is formed on the antiferromagnetic layer and whose magnetizing direction has been fixed; a spacer formed on the pinned layer; a free layer formed on the spacer; and magnetic domain control layers having antiferromagnetic flims and magnet layers for performing a magnetic domain control of the free layer; wherein the each of the antiferromagnetjc films is formed on the free layer; wherein the each of magnet layers has at least two magnetic films coupled anti-ferromagnetically through at least one nonmagnetic film; a pair of lead layers for supplying a current to the stack of layers; and wherein seed layers are formed between the antiferromagnetic films and the lead layers.

REFERENCES:
patent: 5995338 (1999-11-01), Watanabe et al.
patent: 6266218 (2001-07-01), Carey et al.
patent: 9-97409 (1997-04-01), None
patent: 2001-84531 (2001-03-01), None
patent: 2001-250205 (2001-09-01), None

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