Mechanism of the abnormal thermal expansion of nearly stoichiometric LiNbO3
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Date
2011-03-01
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Science
Abstract
High temperature X-ray diffraction, thermal expansion and Raman spectroscopic measurements have been conducted to investigate the structural behavior of nearly stoichiometric LiNbO3. Abnormal thermal expansion has been observed within the temperature range of 1021-1373 K. The mechanism responsible for the abnormal phenomena and the structure deformation has been identified as the competition between the thermal vibration in the x-y plane and the antiphase motion along the z-axis of the [NbO6] framework as a function of temperature through the analysis of the temperature dependent Raman spectra. (C) 2010 Elsevier B.V.
Description
Keywords
X-ray diffraction, Lithium, Thermal expansion, Monocrystals, Raman spectroscopy, Deformation, Temperature range 1000-4000 K, Niobates
Citation
Yao, S .H., Wang, J. Y., Liu, H., Yan, T., Yu, D. H., & Chen, Y. F. (2011). Mechanism of the abnormal thermal expansion of nearly stoichiometric LiNbO(3). Journal of Crystal Growth, 318(1), 951-953. doi:10.1016/j.jcrysgro.2010.10.052