Characterization of magnetic components in the diluted magnetic semiconductor Zn1-xCoxO by x-ray magnetic circular dichroism

M. Kobayashi*, Y. Ishida, J. L. Hwang, T. Mizokawa, A. Fujimori, K. Mamiya, J. Okamoto, Y. Takeda, T. Okane, Y. Saitoh, Y. Muramatsu, A. Tanaka, H. Saeki, H. Tabata, T. Kawai

*この研究の対応する著者

研究成果: Article査読

143 被引用数 (Scopus)

抄録

We report on the results of x-ray absorption, x-ray magnetic circular dichroism (XMCD), and photoemission experiments on Zn1-xCoxO (x=0.05) thin film, which shows ferromagnetism at room temperature. The XMCD spectra show multiplet structures, characteristic of the Co2+ ion tetrahedrally coordinated by oxygen, suggesting that the ferromagnetism comes from Co ions substituting the Zn site in ZnO. The magnetic field and temperature dependences of the XMCD spectra imply that the nonferromagnetic Co ions are strongly coupled antiferromagnetically with each other.

本文言語English
論文番号201201
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
72
20
DOI
出版ステータスPublished - 2005 11 15
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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