Magnetic recording head with non-conformal side shield gap

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United States of America Patent

PATENT NO 8570686
APP PUB NO 20130242431A1
SERIAL NO

13419283

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Abstract

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A magnetic write head having a shield structure that provides both a leading shield and side shielding function. The magnetic shield is separated from the sides and leading edge of the write pole by a non-magnetic gap layer that has a non-uniform thickness. The non-magnetic gap layer is thicker near the leading edge and thinner at the trailing edge. This allows for increased side field gradient near the trailing edge of the write pole and decreased write field loss at the leading edge of the write pole.

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WESTERN DIGITAL TECHNOLOGIES INC3355 MICHELSON DRIVE SUITE 100 IRVINE CA 92612

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eto, Kimitoshi Odawara, JP 4 41
Hashimoto, Junichi Kanagawa, JP 250 1782
Hosomi, Kazuhiko Fujisawa, JP 24 465
Kanai, Misuzu Odawara, JP 7 83
Kudo, Kazue Odawara, JP 46 303
Sugiyama, Mikito Odawara, JP 40 601

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  • 13 Citation Count
  • G11B Class
  • 64.24 % this patent is cited more than
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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges179152655119997461717842801 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +010020030040050060070080090010001100120013001400150016001700

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