Charge Ordering in the Geometrically Frustrated Spinel AlV2O4

Ken Ichiro Matsuno*, Takuro Katsufuji, Shigeo Mori, Yutaka Moritomo, Akihiko Machida, Eiji Nishibori, Masaki Takata, Makoto Sakata, Naoki Yamamoto, Hidenori Takagi

*この研究の対応する著者

研究成果: Article査読

79 被引用数 (Scopus)

抄録

We have found that spinel AlV2O4 shows a phase transition at ∼700K with anomalies of transport and magnetic properties. It is clarified that this corresponds to a charge-ordering transition, where the V2.5+ ions are separated into three V2.5-δ ions and one V2.5+3δ ion. This three-one type of charge ordering, which is coupled with rhombohedral distortion along the (111) axis, reduces the high degeneracy of ground states inherent in this spinel structure, and thus can be understood in terms of "charge frustration.".

本文言語English
ページ(範囲)1456-1459
ページ数4
ジャーナルjournal of the physical society of japan
70
6
DOI
出版ステータスPublished - 2001 6月
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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