Near-field thermally assisted magnetic recording head and recording apparatus thereof
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United States of America Patent
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Oct 9, 2012
Grant Date -
Jan 7, 2010
app pub date -
Dec 10, 2007
filing date -
Dec 18, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A recording head has a conical tip disposed at a distal end thereof configured to oppose a surface of a medium. The conical tip has an opening for generating near-field light and a side surface forming at least a part of an edge portion of the conical tip surrounding the opening. A magnetic recording element generates magnetization inversion in a minute area on the surface of the medium which is heated by application of the near-field light. The magnetic recording element has a main magnetic pole, a secondary magnetic pole, and a dielectric film arranged between the main and secondary magnetic poles. The main magnetic pole comprises a thin film arranged on side surface of the conical tip for providing a magnetic field to the surface of the medium in a substantially vertical direction. The secondary magnetic pole is arranged on a surface of the conical tip opposite to the side surface thereof for absorbing a part of the magnetic field provided from the main magnetic pole.
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