Temperature Dependence of Elastic, Dielectric, and Piezoelectric Constants in TeO2Single Crystals
作者:
Yoshiro Ohmachi,
Naoya Uchida,
期刊:
Journal of Applied Physics
(AIP Available online 1970)
卷期:
Volume 41,
issue 6
页码: 2307-2311
ISSN:0021-8979
年代: 1970
DOI:10.1063/1.1659223
出版商: AIP
数据来源: AIP
摘要:
All of the elastic stiffness constants exceptc13have been found to decrease almost linearly with temperature between −120° and 120°C. The constantc13reaches the maximum in the vicinity of 0°C, above which it also decreases with temperature. On the other hand, the effective elastic constant (c11–c12)/2, which corresponds to the exceptionally slow shear wave propagating along [110], increases with temperature. The shear wave propagating in the (001) plane making angle of 35.9° with theXaxis has zero temperature coefficient of velocity. Acoustic absorptions for several sound modes vary within 1 dB/cm for both the longitudinal wave (measured at 36 MHz) and shear wave (48 MHz) in the measured temperature range. Both real and imaginary parts of the dielectric constants increase monotonically with temperature, while the piezoelectric constantd14decreases in the temperature range between −150° and 180°C.
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