Magnetic medium and writing and reading method
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United States of America Patent
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Oct 14, 2014
Grant Date -
Mar 21, 2013
app pub date -
Aug 10, 2012
filing date -
Sep 21, 2011
priority date (Note) -
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Abstract
According to one embodiment, a magnetic medium includes at least one recording layer including a first magnetic layer, a second magnetic layer and a non-magnetic layer. The first magnetic layer is form of a first magnetic material having a first magnetic anisotropy. The second magnetic layer is made of a second magnetic material having a second magnetic anisotropy different from the first magnetic anisotropy. The non-magnetic layer is made of a non-magnetic material and between the first and second magnetic layers, the first magnetic layer and the second magnetic layer being coupled such that directions of magnetization of the first and second magnetic layers are opposed to each other.
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