論文

査読有り
2020年9月

Magnetic compensation at two different composition ratios in rare-earth-free Mn4-xCoxN ferrimagnetic films

PHYSICAL REVIEW MATERIALS
  • Haruka Mitarai
  • ,
  • Taro Komori
  • ,
  • Taku Hirose
  • ,
  • Keita Ito
  • ,
  • Sambit Ghosh
  • ,
  • Syuta Honda
  • ,
  • Kaoru Toko
  • ,
  • Laurent Vila
  • ,
  • Jean-Philippe Attan
  • ,
  • Kenta Amemiya
  • ,
  • Takashi Suemasu

4
9
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevMaterials.4.094401
出版者・発行元
AMER PHYSICAL SOC

Ferrimagnets in the vicinity of the magnetic compensation point are of particular interest for spin-torquebased spintronics applications, because they require lower switching currents and thus smaller switching energies. Room-temperature compensation is rather uncommon, but can be obtained by tuning the chemical concentrations of compounds such as Co0.79Tb0.21 or Co0.56Gd0.44, in order to find the single concentration at which one sublattice compensates the other. Here we study the ferrimagnetic Mn4-xCoxN films, showing that they presumably possess at room temperature not only one but two different Co concentrations at which the magnetic compensation occurs. Using x-ray absorption spectroscopy and x-ray magnetic circular dichroism measurements, we show that this startling behavior can be explained by the existence of two nonequivalent sites for the Co, when it is inserted in the antiperovskite structure of epitaxial Mn4-xCoxN films.

Web of Science ® 被引用回数 : 1

リンク情報
DOI
https://doi.org/10.1103/PhysRevMaterials.4.094401
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000571519000003&DestApp=WOS_CPL

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