CLC number: O735
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 0000-00-00
Cited: 3
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ZAKHARENKO A.A.. New solutions of shear waves in piezoelectric cubic crystals[J]. Journal of Zhejiang University Science A, 2007, 8(4): 669-674.
@article{title="New solutions of shear waves in piezoelectric cubic crystals",
author="ZAKHARENKO A.A.",
journal="Journal of Zhejiang University Science A",
volume="8",
number="4",
pages="669-674",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.A0669"
}
%0 Journal Article
%T New solutions of shear waves in piezoelectric cubic crystals
%A ZAKHARENKO A.A.
%J Journal of Zhejiang University SCIENCE A
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%P 669-674
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%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.A0669
TY - JOUR
T1 - New solutions of shear waves in piezoelectric cubic crystals
A1 - ZAKHARENKO A.A.
J0 - Journal of Zhejiang University Science A
VL - 8
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SP - 669
EP - 674
%@ 1673-565X
Y1 - 2007
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2007.A0669
Abstract: Acoustic wave propagation in piezoelectric crystals of classes 4̄3m and 23 is studied. The crystals Tl3VS4 and Tl3TaSe4 (4̄3m) of the Chalcogenide family and the crystal Bi12TiO20 (23) possess strong piezoelectric effect. Because the surface Bleustein-Gulyaev waves cannot exist in piezoelectric cubic crystals, it was concluded that new solutions for shear-horizontal surface acoustic waves (SH-SAWs) are found in the monocrystals using different electrical boundary conditions such as electrically “short” and “open” free-surfaces for the unique [101] direction of wave propagation. For the crystal Tl3TaSe4 with coefficient of electromechanical coupling (CEMC) Ke2=e2/(C×g)~1/3, the phase velocity Vph for the new SH-SAWs can be calculated with the following formula: Vph=(Va+Vt)/2, where Vt is the speed of bulk SH-wave, Vt=Vt4(1+Ke2)1/2, Va=aKVt4, aK=2[Ke(1+Ke2)1/2−Ke2]1/2, and Vt4=(C44/ρ)1/2. It was found that the CEMC K2 evaluation for Tl3TaSe4 gave the value of K2=2(Vf–Vm)/Vf~0.047 (~4.7%), where Vf~848 m/s and Vm~828 m/s are the new-SAW velocities for the free and metallized surfaces, respectively. This high value of K2(Tl3TaSe4) is significantly greater than K2(Tl3VS4)~3% and about five times that of K2(Bi12TiO20).
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