MAGNETIC CIRCUIT INCORPORATING RARE-EARTH PERMANENT MAGNET

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PROBLEM TO BE SOLVED : To provide a magnetic circuit wherein the breakage of an adhesive layer due to a difference in coefficient of thermal expansion between a magnet and a yoke can be prevented. SOLUTION : The magnetic circuit has incorporated an R-Fe-B (R : element selected from rare-earth elements including Sc and Y) rare-earth permanent magnet and a yoke, and it is provided with a metallic material between the permanent magnet and the yoke. COPYRIGHT : (C)2006, JPO&NCIPI