Magnetic recording head, magnetic head assembly, magnetic recording apparatus, and magnetic recording method
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United States of America Patent
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Jul 1, 2014
Grant Date -
Jun 3, 2010
app pub date -
Nov 30, 2009
filing date -
Nov 28, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A magnetic recording head includes a first magnetic pole, a second magnetic pole, a spin torque oscillator, a first coil, a second coil, and a third coil. The first magnetic pole applies a recording magnetic field to a magnetic recording medium. The second magnetic pole is provided parallel to the first magnetic pole. At least a portion of the spin torque oscillator is provided between the first magnetic pole and the second magnetic pole. The first coil magnetizes the first magnetic pole. A current is passed through the second coil independently of the first coil. A current is passed through the third coil independently of both the first coil and the second coil.
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