Origin of room-temperature ferromagnetism in Co-doped CeO2

Kenji Tarui, Tomohiro Oomori, Yuya Ito, Tomoyuki Yamamoto*

*この研究の対応する著者

研究成果: Article査読

抄録

Co-doped CeO2 fabricated using the conventional solid-state reaction method demonstrates ferromagnetism at room temperature (RT). To investigate the origin of ferromagnetism at RT, powder X-ray diffraction analysis is first performed, in which pattern changes due to Co doping are not indicated. Subsequently, local environment analysis is carried out using X-ray absorption near-edge structure (XANES) measurements at the Co K-edge, demonstrating the metallic valence state of Co. Hence, it is confirmed that Co exists as nanosized small particles in CeO2, which demonstrates ferromagnetism at RT.

本文言語English
論文番号413158
ジャーナルPhysica B: Condensed Matter
619
DOI
出版ステータスPublished - 2021 10 15

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
  • 電子工学および電気工学

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