Device for generating high frequency magnetic fields in a rest-frame of a magnetic medium
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United States of America Patent
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Aug 20, 2013
Grant Date -
Apr 21, 2011
app pub date -
Oct 21, 2009
filing date -
Oct 21, 2009
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Abstract
A magnetic head having a magnetic wiggler structure for initiating a high frequency magnetic oscillation in a magnetic to improve media-writeability and increase data density. The wiggler structure includes a plurality of magnetic layers that are antiparallel coupled with one another across non-magnetic antiparallel coupling layers. The wiggler structure is arranged just up-track from the point of data writing so that the high frequency oscillation is initiated just prior to the writing of data on the magnetic media.
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