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

doi:10.1143/JPSJ.70.1456

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

87 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 V^2.5+ ions are separated into three V^2.5-δ ions and one V^2.5+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
巻	70
号	6
DOI	https://doi.org/10.1143/JPSJ.70.1456
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）

文献へのアクセス

10.1143/JPSJ.70.1456

他のファイルとリンク

引用スタイル

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abstract = "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.{"}.",

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AU - Matsuno, Ken Ichiro

AU - Katsufuji, Takuro

AU - Mori, Shigeo

AU - Moritomo, Yutaka

AU - Machida, Akihiko

AU - Nishibori, Eiji

AU - Takata, Masaki

AU - Sakata, Makoto

AU - Yamamoto, Naoki

AU - Takagi, Hidenori

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AB - 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.".

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