Magneto-resistive effect element having side shield integrated with upper shield

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United States of America Patent

PATENT NO 9747933
APP PUB NO 20170236538A1
SERIAL NO

15044559

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A magneto-resistive effect element (MR element) has an upper shield that is magnetized in a cross track direction, a lower shield that is positioned at an interval relative to the upper shield in a down track direction, and a multilayer film that is positioned between the upper shield and the lower shield and that faces an air bearing surface (ABS). The multilayer film has a free layer where its magnetization direction fluctuates relative to an external magnetic field, a pinned layer where its magnetization direction is pinned against the external magnetic field, a nonmagnetic spacer layer that is positioned between the free layer and the pinned layer, and an insulating layer that is positioned at a back side of the free layer viewed from the ABS. The MR element further has a pair of side shields that are positioned at both sides of the free layer and the insulating layer in a cross track direction. The side shields contact the upper shield on the sides of the free layer and the insulating layer in the cross track direction.

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Patent Owner(s)

  • TDK CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Degawa, Naomichi Tokyo, JP 20 304
Hashino, Masachika Tokyo, JP 13 15
Hiraki, Tetsuya Tokyo, JP 16 20
Kojima, Hidekazu Tokyo, JP 22 99
Miura, Satoshi Tokyo, JP 121 949
Watanabe, Hisayoshi Tokyo, JP 40 227

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