Uniaxial magnetic anisotropy of transition metal oxides: role of local lattice deformation

DOI Web Site Web Site 被引用文献6件 参考文献54件

書誌事項

公開日
2020-03-03
資源種別
journal article
権利情報
  • https://publishingsupport.iopscience.iop.org/iop-standard/v1
  • https://iopscience.iop.org/info/page/text-and-data-mining
DOI
  • 10.1088/1361-6463/ab7324
公開者
IOP Publishing

この論文をさがす

説明

<jats:title>Abstract</jats:title> <jats:p> We study the effects of the local lattice structure around magnetic ions, on the uniaxial magnetic anisotropy (MA) in transition metal oxides, particularly ferrites, using the electron theory. We address M-type hexagonal ferrites, tetragonally distorted spinel ferrites, and an ilmenite (CoMnO <jats:sub>3</jats:sub> ). The tight-binding scheme with spin–orbit interaction ( <jats:italic>LS</jats:italic> coupling) is applied to calculate the electronic structure and MA energy of small clusters composed of a transition metal (TM) ion and surrounding oxygen ions. The results of uniaxial MA for M-type ferrites agree with those calculated using the first principles as well as those obtained experimentally, indicating the validity of the present scheme. The high numerical accuracy enables us to conclude that the <jats:italic>p</jats:italic>  −  <jats:italic>d</jats:italic> mixing between Fe <jats:sup>3+</jats:sup> and O <jats:sup>2−</jats:sup> ions is crucial for the uniaxial MA of M-type ferrites and that a change in the local lattice structure around TM ions may cause a sign change in the local uniaxial MA of Fe <jats:sup>2+</jats:sup> or Co <jats:sup>2+</jats:sup> doped in M-type ferrites. The results of the uniaxial MA in tetragonally distorted spinel ferrites agree well with the experimental ones. These observations may indicate a feasible method to enhance the magnitude of the uniaxial MA in ferrites. </jats:p>

収録刊行物

被引用文献 (6)*注記

もっと見る

参考文献 (54)*注記

もっと見る

関連プロジェクト

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ