Magnetocrystalline anisotropy in FePt with L1 0 ordering and tetragonal distortion

Yohei Kota, Akimasa Sakuma

研究成果: Article

23 引用 (Scopus)

抜粋

We evaluate the magnetocrystalline anisotropy energy of L1 0 type FePt alloys with the lattice distortion and atomic disorder by using the first-principles calculation, which adopts the tight-binding linear muffin-tin orbital method in conjunction with the coherent potential approximation techniques. The calculated result indicates that the magnetocrystalline anisotropy energy is quite sensitive to the mentioned factors. In particular, it is drastically decreased with the degree of ordering compared with the expected value from the completely ordered structure. We will suggest that the improvement of the chemical ordering of the L1 0 crystal is one of the significant points to obtain a large magnetocrystalline anisotropy from FePt compounds.

元の言語English
記事番号07A310
ジャーナルJournal of Applied Physics
111
発行部数7
DOI
出版物ステータスPublished - 2012 4 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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