Magnetic memory having shape anisotropic magnetic elements
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United States of America Patent
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Nov 23, 1999
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app pub date -
Oct 17, 1997
filing date -
Aug 8, 1995
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Abstract
A magnetically shape-anisotropic material is made by providing a matrix with a plurality of elongated holes, and depositing first and second magnetic materials in each hole so as to form elongated particles including the first material adjacent one end and the second material adjacent the opposite end. One of the materials is a magnetically soft material having relatively low coercivity whereas the other material is a magnetically hard material having relatively high coercivity. The particles have dimensions transverse to their axes of elongation smaller than the magnetic domain size of the magnetically soft material.
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