Spin torque oscillator, method of manufacturing the same, magnetic recording head, magnetic head assembly, and magnetic recording apparatus
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United States of America Patent
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Jan 6, 2015
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N/A
app pub date -
Nov 8, 2011
filing date -
Dec 3, 2010
priority date (Note) -
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Abstract
According to one embodiment, there is provided a spin torque oscillator including an oscillation layer formed of a magnetic material, a spin injection layer formed of a magnetic material and configured to inject a spin into the oscillation layer, and a current confinement layer including an insulating portion formed of an oxide or a nitride and a conductive portion formed of a nonmagnetic metal and penetrating the insulating portion in a direction of stacking. The conductive portion of the current confinement layer is positioned near a central portion of a plane of a device region including the oscillation layer and the spin injection layer.
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