Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 538, Issue -, Pages 56-60Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2012.05.103
Keywords
GdVO4; Electronic structure; Mechanical properties; Optical properties
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Funding
- National Science Foundation of China [50990302]
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The electronic structure, mechanical properties and optical properties of zircon-type GdVO4 were investigated by both local-spin density approximation (LSDA) band theory with Hubbard term of U and experiments. The calculated equilibrium parameters are in good agreement with experimental results and other reports. The band gap of GdVO4 calculated is 2.77 eV. The Mulliken analysis shows Gd-O bonds exhibits more ionic than V-O bonds. The elastic constants, the aggregate elastic moduli (B, G, E), and the Poisson's ratio have been investigated from both calculation and experiment and they are in accordance with each other. The optical properties are also calculated, which shows GdVO4 has high optical isotropy. (C) 2012 Elsevier B.V. All rights reserved.
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