Magnetic material and motor using the same
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United States of America Patent
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Sep 2, 2014
Grant Date -
Oct 6, 2011
app pub date -
Feb 17, 2011
filing date -
Mar 30, 2010
priority date (Note) -
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Abstract
Characteristics of a magnetic material are improved without using a heavy rare earth element as a scarce resource. By incorporating fluorine into a magnetic powder and controlling the crystal orientation in crystal grains, a magnetic material securing magnetic characteristics such as coercive force and residual flux density can be fabricated. As a result, the resource problem with heavy rare earth elements can be solved, and the magnetic material can be applied to magnetic circuits that require a high energy product, including various rotating machines and voice coil motors of hard discs.
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