Saile Ackerman LLC
Low noise magneto-resistive sensor utilizing magnetic noise cancellation
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.
Headway Technologies, Inc.
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inventional additional inventional inventional inventional
Tong Moris Kunliang Yuchen Yu-Hsai
Zhao Dovek Zhang Zhou Chen