Degree of order dependence on magnetocrystalline anisotropy in body-centered tetragonal feco alloys

Yohei Kota, Akimasa Sakuma

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

We investigate the magnetocrystalline anisotropy (MCA) energy of tetragonal distorted FeCo alloys depending on the degree of order by firstprinciples electronic structure calculation combined with the coherent potential approximation. The obtained results indicate that the MCA energy of FeCo alloys strongly depends on the degree of order under optimal conditions, where the axial ratio of the body-centered tetragonal (bct) structure is 1.25 and the composition is Fe0.5Co0.5. We find that the modification of the electronic structure resulting from electron scattering by chemical disorder has a considerable influence on the MCA under these conditions.

Original languageEnglish
Article number113002
JournalApplied Physics Express
Volume5
Issue number11
DOIs
Publication statusPublished - 2012 Nov

ASJC Scopus subject areas

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

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