The Bleustein-Gulyaev waves propagation characteristics in KNbO3 and PKN crystals.

被引：6
|
作者：
Dvoesherstov, MY [1 ]
Cherednick, VI [1 ]
Chirimanov, AP [1 ]
Petrov, SG [1 ]
机构：
[1] Nizhny Novgorod State Univ, Nizhnii Novgorod, Russia
来源：
3RD INTERNATIONAL CONFERENCE ON OPTICAL INFORMATION PROCESSING | 1999年 / 3900卷
关键词：
KNbO3; PKN piezoelectric crystals; superhigh electromechanical coupling; Bleustein-Gulyaev wave;
D O I：
10.1117/12.364556
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
In this paper, theoretical investigation is shown for cuts and propagation directions on KNbO3, PKN substrates where the Bleustein-Gulyaev waves exist. The KNbO3 and PKN crystals Y-cut, X -propagating (Euler angles: (0(0),90(0),00)) relate to the condition in which the stiffened shear horizontal wave and pure mechanical Rayleigh wave are present. In this symmetry orientation (piezoelectric substrates) the sagittal and transverse particle displacements also uncouple. In this situation, the potential is coupled to the shear horizontal displacements only. Electromechanical coupling coefficients K-2 has a sufficiently large value of above 53 % with a phase velocity of V=3.918 km/s for KNbO3 crystals and factor K-2 has a large value of above 23.6% and phase velocity V=3.054 km/s for PKN crystals.
引用
收藏
页码：290 / 296
页数：7
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