Stock material or miscellaneous articles – Magnetic recording component or stock – Magnetic head
Reexamination Certificate
2006-04-11
2006-04-11
Resan, Stevan A. (Department: 1773)
Stock material or miscellaneous articles
Magnetic recording component or stock
Magnetic head
C428S811000, C360S324120
Reexamination Certificate
active
07026063
ABSTRACT:
A method and apparatus of a spin-type magnetoresistance sensor having a free and pinned magnetic layer stacked with a non-magnetic interposed layer are disclosed. Specifically, the spin-valve type magnetoresistance sensor of the present invention is equipped with a free ferromagnetic layer, a pinned ferromagnetic layer, a non-magnetic spacer layer which is sandwiched between the aforementioned ferromagnetic layers, an anti-ferromagnetic layer which is disposed adjacent to the aforementioned pinned ferromagnetic layer and which is used to pin the direction of magnetization of said pinned ferromagnetic layer, a non-magnetic back layer which is disposed adjacent to the aforementioned free ferromagnetic layer and which is stacked on the opposite side the free ferromagnetic layer from the aforementioned nonmagnetic spacer layer, and an electron-reflective layer which is disposed adjacent to the aforementioned back layer and which is stacked on the opposite side of the back layer from the aforementioned free ferromagnetic layer.
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Kamiguchi, Y., et al., CoFe Specular Spin Valves with a Nano Oxide Layer; Digests of INTERMAG 99; 1999 IEEE International Magnetics Conference Digest of Technical Papers.
Hikami Fuminori
Nishida Hiroshi
Ueno Masaki
Burgess & Bereznak LLP
Falasco Louis
Harrison, Esq. Joshua C.
Resan Stevan A.
Western Digital (Fremont) Inc.
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