Magnetic sensing device with reduced shield-to-shield spacing

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United States of America Patent

PATENT NO 9442171
APP PUB NO 20090174968A1
SERIAL NO

11971664

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Abstract

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A magnetic sensor assembly includes first and second shields each comprised of a magnetic material. The first and second shields define a physical shield-to-shield spacing. A sensor stack is disposed between the first and second shields and includes a seed layer adjacent the first shield, a cap layer adjacent the second shield, and a magnetic sensor between the seed layer and the cap layer. At least a portion of the seed layer and/or the cap layer comprises a magnetic material to provide an effective shield-to-shield spacing of the magnetic sensor assembly that is less than the physical shield-to-shield spacing.

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Patent Owner(s)

  • SEAGATE TECHNOLOGY LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dimitrov, Dimitar V Edina, US 127 1385
Gao, Zheng Savage, US 258 4699
He, Qing Plymouth, US 150 2761
Johnson, Matt Edina, US 27 242
Singleton, Eric W Maple Plain, US 46 569
Xue, Song S Edina, US 91 1375
Yi, Jae-Young Shakopee, US 35 311

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