Far-infrared optical properties of YVO4 single crystal

被引：25

作者：

Bi, C. Z.

Ma, J. Y.

Yan, J.

Fang, X.

Yao, D. Z.

Zhao, B. R.

Qiu, X. G.

机构：

[1] Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, Beijing 100080, Peoples R China

[2] Wuhan Univ, Dept Phys, Wuhan 430072, Hubei, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL B | 2006年 / 51卷 / 02期

关键词：

D O I：

10.1140/epjb/e2006-00206-x

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Near-normal incident infrared reflectivity spectra of a (001) YVO4 single crystal have been measured at different temperatures in the frequency region between 100 and 6000 cm(-1). The reflectivity spectra are analyzed with the factorized form of the dielectric function, and the dielectric properties and optical conductivity of the YVO4 crystal are obtained. From the TO/LO splitting, effective charges at different temperatures are calculated to study the ionicity of YVO4. The internal modes of the VO43- ion and the external modes of the Y(VO4) lattice are compared with SiO44- in zircon and with other rare-earth vanadates.

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页码：167 / 171

页数：5

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