Effect of Nonmagnetic Impurity Doped on the Structural and Magnetic Properties of Quasi-one-dimensional Antiferromagnet LiCuVO4

doi:10.1007/s40242-015-4338-5

Chemical Research in Chinese Universities ›› 2015, Vol. 31 ›› Issue (3): 457-460.doi: 10.1007/s40242-015-4338-5

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Effect of Nonmagnetic Impurity Doped on the Structural and Magnetic Properties of Quasi-one-dimensional Antiferromagnet LiCuVO₄

YANG Xu¹, DU Fei¹, BIE Xiaofei¹, LI Malin¹, ZHANG Rongyu¹, WEI Yingjin¹, WANG Chunzhong¹, CHEN Gang^1,2

1. Key Laboratory of Physics and Technology for Advanced Batteries, Ministry of Education, College of Physics, Jilin University, Changchun 130012, P. R. China;
2. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China

Received:2014-09-09 Revised:2015-02-09 Online:2015-06-01 Published:2015-03-09
Contact: WANG Chunzhong E-mail:wcz@jlu.edu.cn
Supported by:
Supported by the Research Fund for the Doctoral Program of Higher Education of China(No.20110061130006), the National Foundation for Fostering Talents of Basic Science of China(No.J1103202), the Development Program of Science and Technology of Jilin Province, China(No.20120310) and the Fundamental Research Funds for Jilin University, China(No.2013ZY12).

Abstract

Abstract:

Zn²⁺ ions doped quasi-one-dimensional spin-chain materials LiCu_1-xZn_xVO₄(x=0, 0.1, 0.2) were prepared by solid-state reaction and the effect of nonmagnetic Zn²⁺ ions on the crystal structure, valence state and magnetic properties of them were studied by X^-ray diffraction(XRD), X^-ray photoelectron spectroscopy(XPS) and dc magnetization. The elongation of a and b axes and the shrinkage of c axis indicate a reduced effect of the Jahn-Teller distortion after Zn²⁺ ions doping, while the valence state of transition metal ions in LiCu_1-xZn_xVO₄ remains unchanged since the equivalence doping of Zn²⁺ ions on the Cu²⁺ sites. The corrected Bonner-Fisher equation fitting to the susceptibility indicates that isolated dimers and spins are created along with the departure from infinite spin chains to finite ones.

Key words: LiCuVO₄, Spin chain, Nonmagnetic Zn²⁺ substitution, Isolated dimer

YANG Xu, DU Fei, BIE Xiaofei, LI Malin, ZHANG Rongyu, WEI Yingjin, WANG Chunzhong, CHEN Gang. Effect of Nonmagnetic Impurity Doped on the Structural and Magnetic Properties of Quasi-one-dimensional Antiferromagnet LiCuVO₄[J]. Chemical Research in Chinese Universities, 2015, 31(3): 457-460.

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Effect of Nonmagnetic Impurity Doped on the Structural and Magnetic Properties of Quasi-one-dimensional Antiferromagnet LiCuVO₄

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