MAGNETORESISTIVE SENSOR HAVING AN ENHANCED FREE LAYER STABILIZATION MECHANISM
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United States of America Patent
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Issued Date -
Jun 25, 2009
app pub date -
Dec 21, 2007
filing date -
Dec 21, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A magnetoresistive sensor having an improved hard bias stabilization structure. The sensor includes a hard bias layer that is formed on a surface that has been treated to form it with an anisotropic texture that induces a magnetic anisotropy oriented parallel with the air bearing surface. This magnetic anisotropy is further aided by a shape induced magnetic anisotropy caused by configuring the hard bias layers to have a width parallel with the air bearing surface that is larger than a stripe height of the hard bias layer measured perpendicular to the air bearing surface.
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