Magnetic memory element with vortex magnetization to control magnetization rotation and prevent leakage of magnetic flux
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United States of America Patent
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Sep 27, 2005
Grant Date -
Apr 29, 2004
app pub date -
Aug 13, 2003
filing date -
Aug 22, 2002
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Abstract
A magnetic memory is composed of a ring-shaped magnetic layer that includes a notch having a circular arc shape. The notch is formed by partially cutting out the periphery of the ring-shaped magnetic layer. A ratio h/H1 for the magnetic layer is set to be equal to or greater than 0.01 where 'h' is the height of the notch and 'H1' is the outer diameter of the magnetic layer.
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