Analytic expression for magnetic activation energy

研究成果: Article査読

抄録

We theoretically investigate the magnetic activation energy of permanent magnets. Practically, it is widely used in a phenomenological form as where is the activation energy in the absence of an external magnetic field is a real parameter, and is defined by the equation . We derive the general and direct expressions for these phenomenological parameters under the restriction of uniform rotation of magnetization and on the basis of the perturbative theory with respect to . Further, we apply our results to Nd2Fe14B magnets and confirm the validity of the proposed method by comparing with the Monte Carlo calculations.

本文言語English
論文番号058002
ジャーナルJapanese journal of applied physics
58
5
DOI
出版ステータスPublished - 2019

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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