Valence state analysis of Mn and Fe ions in room-temperature ferromagnetic Mn- and Fe-codoped in 2 O 3

Teruki Okazaki, Tsuyoshi Yoshioka, Yasuyuki Kusakabe, Tomoyuki Yamamoto*, Akihiko Kitada

*この研究の対応する著者

研究成果査読

3 被引用数 (Scopus)

抄録

The detailed valence states of Mn and Fe ions in room-temperature ferromagnetic In2O3 doped with Mn and Fe ions were investigated by the near-edge X-ray absorption fine structure (NEXAFS) measurements. It was confirmed that Mn2+ and Mn3+ coexist in In2O3. In addition to these two magnetic ions, Sn 4+ was incorporated to control the charge states of doped Mn and/or Fe ions, which makes the Mn2+Mn3+ ratio larger with an increase in the doped- Sn4+ concentration. It was found that the magnetic susceptibility decreased with an increase in Mn2+ because of the Sn4+-doping, which indicated that the coexistence of Mn 2+ and Mn3+ is mandatory for room-temperature ferromagnetism in Mn- and Fe-codoped In2O3.

本文言語English
ページ(範囲)1749-1752
ページ数4
ジャーナルSolid State Communications
151
23
DOI
出版ステータスPublished - 2011 12 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学

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