Magnetoresistance effect element

Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head

Reexamination Certificate

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Reexamination Certificate

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06853520

ABSTRACT:
There are provided a magnetoresistance effect element, a magnetic head, a magnetic head assembly and a magnetic recording system, which have high sensitivity and high reliability. The magnetoresistance effect element has two ferromagnetic layers, a non-magnetic layer provided between the ferromagnetic layers, and a layer containing an oxide or nitride as a principal component, wherein the layer containing the oxide or nitride as the principal component contains a magnetic transition metal element which does not bond to oxygen and nitrogen and which is at least one of Co, Fe and Ni.

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W. F. Egelhoff, et al., J. Appl. Phys., vol. 82, No. 12, pps. 6142-6151, “Oxygen as a Surfactant in the Growth of Giant Magnetoresistance Spin Valves,” Dec. 15, 1997.
Y. Kamiguchi, et al., The 1999 IEEE INTERnational MAGnetics Conference,“CoFe Specular Spin Valves with a Nano Oxide Layer,” May 18-21, 1999.

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