Hybrid acoustic waves in piezoelectric plates

Author

Kuznetsova, I.E. ; Zaitsev, B.D. ; Borodina, Irina A. ; Teplykh, A.A.

Author_Institution

Dept. of Saratov, RAS, Saratov, Russia

Volume

2

fYear

2003

fDate

5-8 Oct. 2003

Firstpage

1420

Abstract

The conditions of zero-order and high-order hybridization of the acoustic waves propagating in a piezoelectric crystal plate have been studied. The dependence of the phase velocity of the hybrid waves on the parameter hf (h = plate thickness, f = wave frequency) is established for the potassium niobate and lithium niobate plates possessing various crystallographic orientations and sheet conductances. It is found that hybridization takes place when the sheet conductance exceeds a certain value, which can vary within broad limits depending on the plate material and orientation. The degree of dispersive repulsion of the coupled modes increases with the electromechanical coupling coefficient.

Keywords

acoustic wave propagation; acoustic waves; crystal orientation; electromagnetic coupling; lithium compounds; piezoelectric materials; potassium compounds; ultrasonic dispersion; acoustic waves propagation; coupled modes; crystallographic orientations; dispersive repulsion; electromechanical coupling coefficient; high-order hybridization; hybrid acoustic waves; hybrid waves; lithium niobate; phase velocity; piezoelectric crystal plate; piezoelectric plates; plate material; plate orientation; plate possessing; plate thickness; potassium niobate; sheet conductances; wave frequency; zero-order hybridization; Acoustic propagation; Acoustic waves; Conducting materials; Crystalline materials; Crystallography; Frequency; Hafnium; Lithium niobate; Niobium compounds; Sheet materials;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics, 2003 IEEE Symposium on

Print_ISBN

0-7803-7922-5

Type

conf

DOI

10.1109/ULTSYM.2003.1293170

Filename

1293170