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Determination of elastic, piezoelectric, and dielectric constants of 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 single crystal by Brillouin scattering

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4 Author(s)
Xu, Zhengkui ; Department of Physics and Materials Science, City University of Hong Kong, Hong Kong, SAR China ; Siu, G.G. ; Liu, Yulong ; Haosu Luo

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We report the determination of the complete set of elastic, piezoelectric, and dielectric constants of a 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 (0.67PMN-0.33PT) single crystal by using Brillouin scattering in which all experimental data were collected from one [001]cub-poled crystal sample. The values of determined constants are similar to those previously determined from four crystal samples by using a hybrid method combining both ultrasonic and resonant techniques. The directional dependence of the compressional and shear modulus of the crystal in the (001) plane was investigated. A new weak broad peak appears at the low frequency side (∼18 GHz) between 45° and 65° scattering angles and the possible origins of the peak are discussed.

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Journal of Applied Physics  (Volume:101 ,  Issue: 2 )