Electrically non-conductive magnetic shield laminate structure for contact recording sensor
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United States of America Patent
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Sep 19, 2017
Grant Date -
Dec 29, 2016
app pub date -
Jun 7, 2016
filing date -
Jun 27, 2015
priority date (Note) -
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Abstract
An apparatus according to one embodiment includes a magnetic sensor structure, a magnetic shield having at least one laminate pair comprising a magnetic layer and an electrically nonconductive nonmagnetic layer, and a nonmagnetic spacer layer between the sensor structure and the magnetic shield. In one embodiment, a deposition thickness of the nonconductive nonmagnetic layer in each laminate pair is about 10% or less of a total deposition thickness of the laminate pair. In another embodiment, a deposition thickness of the nonconductive nonmagnetic layer in each laminate pair is between about 1 and about 12 nanometers. In yet another embodiment, the magnetic shield has at least one second laminate pair, and a nonlaminated magnetic portion sandwiched between the at least one laminate pair and the at least one second laminate pair.
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