Sensor stabilization in a multiple sensor magnetic reproducing device

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United States of America Patent

PATENT NO 9685177
SERIAL NO

14793988

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Abstract

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A multi-sensor reader that includes a first sensor that has a sensing layer with a magnetization that changes according to an external magnetic field. The first sensor also includes first and second side biasing magnets having a magnetization substantially along a first direction. The first and second side biasing magnets align the magnetization of the sensing layer substantially along the first direction when the sensing layer is not substantially influenced by the external magnetic field. The multi-sensor reader further includes a second sensor that is stacked over the first sensor. The second sensor includes a reference layer that has a magnetization that is set substantially along a second direction. The first sensor further includes at least one sensor-stabilization feature that counteracts an influence of a magnetic field utilized to set the magnetization of the reference layer of the second sensor in the second direction on the magnetization of at least one of the first and second side biasing magnets in the first direction.

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Patent Owner(s)

  • SEAGATE TECHNOLOGY LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ge, Zhiguo Edina, US 20 116
Mckinlay, Shaun E Eden Praire, US 11 75
Singleton, Eric W Maple Plain, US 46 569
Tan, LiWen Eden Prairie, US 28 166
Yi, Jae Young Prior Lake, US 8 43

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