Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2008-10-08
2011-10-04
Ho, Hoai v (Department: 2827)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
C360S325000
Reexamination Certificate
active
08031445
ABSTRACT:
A magnetic sensor, formed from a pair of magnetically free layers located on opposing sides of a non-magnetic layer, and method for its manufacture, are described. Biasing these free layers to be roughly orthogonal to one another causes them to be magnetostatically coupled in a weak antiferromagnetic mode. This enables the low frequency noise spectra of the two free layers to cancel one another. Careful control of the SH/TW ratio is an important feature of the device.
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Chen Yu-Hsai
Dovek Moris
Zhang Kunliang
Zhao Tong
Zhou Yuchen
Ackerman Stephen B.
Headway Technologies Inc.
Ho Hoai v
Saile Ackerman LLC
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