Temperature Coefficients of Potassium Niobate (KNbO3) Elastic Constants Studied by Brillouin Spectroscopy

被引：0
|
作者：
Eschbach, J. [1 ,2 ]
El Hakiki, M. [1 ,2 ]
Rouxel, D. [1 ,2 ]
Vincent, B. [1 ,2 ]
Elmazria, O. [1 ,2 ]
Vialle, S. [1 ,2 ]
Krueger, J. K. [2 ,3 ]
Alnot, P. [1 ,2 ]
机构：
[1] Nancy Univ, CNRS, UMR 7040, Lab Phys Milieux Ionises & Applicat, F-54506 Vandoeuvre Les Nancy, France
[2] Lab European Rech Univ, Lorriane, Saarland, Germany
[3] Univ Saarland, Expt Phys, D-66041 Saarbrucken, Germany
来源：
2006 IEEE ULTRASONICS SYMPOSIUM, VOLS 1-5, PROCEEDINGS | 2006年
关键词：
potassium niobate; elastic constants; TCij; Brillouin spectroscopy;
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In this paper we present the study of potassium niobate KNbO3 single crystals with different cuts in order to observe the temperature dependence of the acoustic velocity of bulk waves in chosen crystallographic directions. The crystal was temperature controlled to determine the variation of the elastic constant versus the temperature. The novelty of this work concerns the determination for the first time for KNbO3, in the best of our knowledge, of the temperature coefficients of elastic constants C-11 and C-44. All measurements have been performed by Brillouin spectroscopy, in the range of (240 - 420 K).
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页码：1189 / +
页数：2
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