An analysis of shear horizontal surface acoustic wave propagation under mechanical losses

Author

Zerdali, M. ; Hamzaoui, S.

Author_Institution

Lab. de Microscope Electronique & des Sci. des Materiaux, Univ. des Sciences et de Technol. d´´Oran, Oran, Algeria

Volume

3

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

1646

Abstract

In piezoelectric materials, two kinds of losses can be distinguished: mechanical and dielectric. The loss effects are introduced in the Christofell formalism via complex elastic and dielectric coefficients, to evaluate the piezoelectric properties of shear horizontal surface acoustic waves. The surface permittivity concept is used to express the influences of losses on phase velocity, and the electromechanical coupling coefficient of the piezoelectric materials. The feasibility of this method is demonstrated with ZnO and AlN piezoelectric substrates.

Keywords

II-VI semiconductors; III-V semiconductors; aluminium compounds; elastic constants; losses; permittivity; piezoelectric semiconductors; surface acoustic waves; wide band gap semiconductors; zinc compounds; AlN; Christofell formalism; ZnO; complex dielectric coefficients; complex elastic coefficients; electromechanical coupling coefficient; mechanical losses; phase velocity; piezoelectric materials; piezoelectric properties; shear horizontal surface acoustic wave propagation; surface permittivity; Acoustic propagation; Acoustic waves; Dielectric losses; Equations; Permittivity; Piezoelectric materials; Propagation losses; Surface acoustic wave devices; Surface acoustic waves; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2002. IEEE CCECE 2002. Canadian Conference on

ISSN

0840-7789

Print_ISBN

0-7803-7514-9

Type

conf

DOI

10.1109/CCECE.2002.1013003

Filename

1013003