Unusually large magnetic anisotropy in a CuO-based semiconductor Cu 5V2O10

Zhangzhen He; Chensheng Lin; Wendan Cheng; Atsushi Okazawa; Norimichi Kojima; Jun Ichi Yamaura; Yutaka Ueda

doi:10.1021/ja110394j

Unusually large magnetic anisotropy in a CuO-based semiconductor Cu ₅V₂O₁₀

Zhangzhen He^*, Chensheng Lin, Wendan Cheng, Atsushi Okazawa, Norimichi Kojima, Jun Ichi Yamaura, Yutaka Ueda

^*Corresponding author for this work

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

19 Citations (Scopus)

Abstract

A CuO-based material Cu₅V₂O₁₀ was successfully grown in a closed crucible using Sr(OH)₂·8H ₂O as flux. The structure of Cu₅V₂O ₁₀ can be viewed as being composed of two types of zigzag Cu-O chains running along the b- and c-axes, which shows a two-dimensional crosslike framework with 12-column square tunnels along the a-axis. Magnetic measurements show that Cu₅V₂O₁₀ exhibits unexpected large magnetic anisotropy, which is the first time magnetic anisotropy energy of ∼10⁷ erg/cm³ in the CuO-based materials has been observed. The origins of large anisotropy are suggested to arise from strong anisotropic exchanges due to the particular bonding geometry and the Jahn-Teller distortion of Cu²⁺ ions. Further, the band structure investigated by the GGA+U method suggests that Cu₅V₂O₁₀ is a semiconductor.

Original language	English
Pages (from-to)	1298-1300
Number of pages	3
Journal	Journal of the American Chemical Society
Volume	133
Issue number	5
DOIs	https://doi.org/10.1021/ja110394j
Publication status	Published - 2011 Feb 9
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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title = "Unusually large magnetic anisotropy in a CuO-based semiconductor Cu 5V2O10",

abstract = "A CuO-based material Cu5V2O10 was successfully grown in a closed crucible using Sr(OH)2·8H 2O as flux. The structure of Cu5V2O 10 can be viewed as being composed of two types of zigzag Cu-O chains running along the b- and c-axes, which shows a two-dimensional crosslike framework with 12-column square tunnels along the a-axis. Magnetic measurements show that Cu5V2O10 exhibits unexpected large magnetic anisotropy, which is the first time magnetic anisotropy energy of ∼107 erg/cm3 in the CuO-based materials has been observed. The origins of large anisotropy are suggested to arise from strong anisotropic exchanges due to the particular bonding geometry and the Jahn-Teller distortion of Cu2+ ions. Further, the band structure investigated by the GGA+U method suggests that Cu5V2O10 is a semiconductor.",

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AU - He, Zhangzhen

AU - Lin, Chensheng

AU - Cheng, Wendan

AU - Okazawa, Atsushi

AU - Kojima, Norimichi

AU - Yamaura, Jun Ichi

AU - Ueda, Yutaka

PY - 2011/2/9

Y1 - 2011/2/9

N2 - A CuO-based material Cu5V2O10 was successfully grown in a closed crucible using Sr(OH)2·8H 2O as flux. The structure of Cu5V2O 10 can be viewed as being composed of two types of zigzag Cu-O chains running along the b- and c-axes, which shows a two-dimensional crosslike framework with 12-column square tunnels along the a-axis. Magnetic measurements show that Cu5V2O10 exhibits unexpected large magnetic anisotropy, which is the first time magnetic anisotropy energy of ∼107 erg/cm3 in the CuO-based materials has been observed. The origins of large anisotropy are suggested to arise from strong anisotropic exchanges due to the particular bonding geometry and the Jahn-Teller distortion of Cu2+ ions. Further, the band structure investigated by the GGA+U method suggests that Cu5V2O10 is a semiconductor.

AB - A CuO-based material Cu5V2O10 was successfully grown in a closed crucible using Sr(OH)2·8H 2O as flux. The structure of Cu5V2O 10 can be viewed as being composed of two types of zigzag Cu-O chains running along the b- and c-axes, which shows a two-dimensional crosslike framework with 12-column square tunnels along the a-axis. Magnetic measurements show that Cu5V2O10 exhibits unexpected large magnetic anisotropy, which is the first time magnetic anisotropy energy of ∼107 erg/cm3 in the CuO-based materials has been observed. The origins of large anisotropy are suggested to arise from strong anisotropic exchanges due to the particular bonding geometry and the Jahn-Teller distortion of Cu2+ ions. Further, the band structure investigated by the GGA+U method suggests that Cu5V2O10 is a semiconductor.

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Unusually large magnetic anisotropy in a CuO-based semiconductor Cu ₅V₂O₁₀

Abstract

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