… Materials that emphasize high magnetic permeability, which indicates how B increases when H increases, are called high permeability materials. Materials that are used in a magnetized state after being strongly magnetized in one direction are called permanent magnet materials or hard magnetic materials. Materials that have a relatively high coercive force, can be magnetized in one direction and then the opposite direction during use, and can operate over the entire range of the hysteresis loop, are called semi-hard magnetic materials. … *Some of the terminology that refers to "permanent magnet materials" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…Hが増したときのBの増し方を表す透磁率の大きいことに重点がある材料を高透磁率材料という。また,一度一方向に強く磁化して着磁した状態で使用されるものは永久磁石材料あるいは硬質磁性材料と呼ばれる。ある程度保磁力が大きくて,使用中に一つの方向に磁化されたり,また反対方向に磁化されたり,履歴曲線の全域にわたって動作するように使用されるものを半硬質磁性材料という。… ※「永久磁石材料」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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