Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier
Reexamination Certificate
2006-12-15
2009-12-15
Heinz, A. J. (Department: 2627)
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of the amplifier
C360S324100, C360S324200, C257S421000, C365S158000, C365S171000
Reexamination Certificate
active
07633699
ABSTRACT:
An apparatus includes a magnetically biased multilayer structure having a reference layer and a free layer separated by a spacer layer; a DC current source connected to the multilayer structure; an AC current source connected to the multilayer structure; and a phase detector for measuring a phase difference between an AC current and a voltage across the multilayer structure. A method performed by the apparatus is also provided.
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Covington Mark William
Gokemeijer Nils Jan
Kaka Shehzaad
Seigler Michael Allen
Heinz A. J.
Lenart, Esq. Robert P.
Pietragallo Gordon Alfano Bosick & Raspanti, LLP
Seagate Technology LLC
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