Direct expressions for magnetic anisotropy constants

Daisuke Miura, Ryo Sasaki, Akimasa Sakuma

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Direct expressions for the magnetic anisotropy constants are given at a finite temperature from a microscopic viewpoint. The present derivation assumes that the Hamiltonian is a linear function with respect to the magnetization direction. We discuss in detail the first-order anisotropy constant K1 and show that our present results reproduce previous results. We applied our method to Nd2Fe14B compounds and confirmed that the present method can reproduce the temperature dependence of the magnetocrystalline anisotoropy constants K1, K2, and K3 well.

Original languageEnglish
Article number113003
JournalApplied Physics Express
Issue number11
Publication statusPublished - 2015 Nov
Externally publishedYes

ASJC Scopus subject areas

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


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