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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

79 Citations (Scopus)

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 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.".

Original language	English
Pages (from-to)	1456-1459
Number of pages	4
Journal	journal of the physical society of japan
Volume	70
Issue number	6
DOIs	https://doi.org/10.1143/JPSJ.70.1456
Publication status	Published - 2001 Jun
Externally published	Yes

Keywords

Charge ordering
Geometrical frustration
Spinel

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.70.1456

Cite this

Charge Ordering in the Geometrically Frustrated Spinel AlV₂O₄. / Matsuno, Ken Ichiro; Katsufuji, Takuro; Mori, Shigeo; Moritomo, Yutaka; Machida, Akihiko; Nishibori, Eiji; Takata, Masaki; Sakata, Makoto; Yamamoto, Naoki; Takagi, Hidenori.

In: journal of the physical society of japan, Vol. 70, No. 6, 06.2001, p. 1456-1459.

Research output: Contribution to journal › Article › peer-review

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AU - Machida, Akihiko

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AU - Takagi, Hidenori

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