…Ferrite is also used as a high-permeability material for coil cores, but the movement of the stable positions of divalent ions of iron, cobalt, etc., which occurs through a mechanism similar to the diffusion magnetic aftereffect, reduces the magnetic permeability. This phenomenon is known as disaccommodation. The thermal fluctuation magnetic aftereffect was proposed by L. Nehru, and explains that the rotation of magnetization or the movement of domain walls occurs due to thermal fluctuations, and that the relaxation time of the relaxation process has a continuous distribution over a wide range, from very long to very short. … *Some terminology explanations that mention "disaccommodation" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…フェライトはまた高透磁率材料としてコイルの磁心などに用いられるが,拡散磁気余効と同様な機構で起こる鉄,コバルトなどの2価イオンの安定位置の移動が透磁率を減少させる。この現象はディスアコモデーションdisaccommodationとして知られている。 熱ゆらぎ磁気余効はL.ネールによって提唱されたもので,磁化の回転,または磁壁の移動が熱的なゆらぎで起こり,その緩和過程の緩和時間が非常に長いものから非常に短いものまで広い範囲にわたって連続的に分布をもつとして説明をするものである。… ※「disaccommodation」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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