Thin film magnetic head including spin-valve film with free layer magnetically connected with shield
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United States of America Patent
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May 7, 2013
Grant Date -
Apr 12, 2012
app pub date -
Oct 8, 2010
filing date -
Oct 8, 2010
priority date (Note) -
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Abstract
A thin film magnetic head includes; an MR film that includes a pinned layer of which a magnetization direction is pinned, a free layer of which a magnetization direction varies, and a spacer that is disposed therebetween; a pair of shields that are disposed on both sides sandwiching the MR film in a direction orthogonal to a film surface of the MR film; and an anisotropy providing layer that provides anisotropy to a first shield so that the first shield is magnetized in a desired direction, and that is disposed on an opposite side from the MR film with respect to the first shield. The MR film includes a magnetic coupling layer that is disposed between the first shield and the free layer and that magnetically couples the first shield with the free layer.
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