Piezoelectric interfacial waves in langasite and dilithium tetraborate

Author

Danicki, E. ; Laprus, W.

Author_Institution

Polish Acad. of Sci., Warsaw, Poland

Volume

2

fYear

1995

fDate

7-10 Nov 1995

Firstpage

1011

Abstract

Waves propagating along a perfectly conducting plane embedded in a piezoelectric medium are investigated. Numerical analysis of trigonal langasite (LGS) and cubic dilithium tetraborate (LBO) crystals shows that such waves exist for many orientations of the conducting plane with respect to the crystallographic axes, and for many directions of propagation. The wave velocity is close to that of the slowest shear wave for the same direction, and the piezoelectric coupling coefficient can be as high as 1.65% for LBO and 0.25% for LGS. The conditions of existence, and the properties of the most interesting waves are presented. Expected applications are discussed

Keywords

acoustic dispersion; acoustic wave propagation; acoustic wave velocity; eigenvalues and eigenfunctions; gallium compounds; interface phenomena; lanthanum compounds; lithium compounds; piezoelectric materials; La₃Ga₅SiO₁₄; Li₂B₄O₇; conditions of existence; conducting plane orientations; cubic dilithium tetraborate; dispersive equation; eigenvalue problem; numerical analysis; perfectly conducting plane; piezoelectric coupling coefficient; piezoelectric interfacial waves; piezoelectric medium; slowest shear wave; trigonal langasite; wave propagation; wave velocity; Crystallography; Crystals; Encapsulation; Numerical analysis; Optical coupling; Radio access networks; Strips; Surface acoustic waves; Tensile stress; Thermal stresses;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE

Conference_Location

Seattle, WA

ISSN

1051-0117

Print_ISBN

0-7803-2940-6

Type

conf

DOI

10.1109/ULTSYM.1995.495734

Filename

495734