RARE EARTH PERMANENT MAGNET AND PRODUCTION METHOD OF RARE EARTH PERMANENT MAGNET
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United States of America Patent
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Feb 15, 2018
app pub date -
Oct 30, 2017
filing date -
Apr 30, 2015
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Abstract
A rare earth permanent magnet comprising a main phase containing: one or more elements R selected from a group consisting of Nd and Pr; one or more elements L selected from a group consisting of Co, Be, Li, Al and Si; one or more elements A selected from a group consisting of Tb, Sm, Gd, Ho and Er; Fe; and B, wherein crystals forming the main phase belong to P42/mnm, and some B atoms occupying a 4f site are substituted by atoms of the elements L.
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