Measurements of Bleustein-Gulyaev waves in Li/sub 2/B/sub 4/O/sub 7/ crystal

Author

Soluch, Waldemar

Author_Institution

Inst. of Electron. Mater. Technol., Warsaw, Poland

Volume

42

Issue

5

fYear

1995

Firstpage

967

Lastpage

969

Abstract

Properties of Bleustein-Gulyaev waves (BGW) in Li/sub 2/B/sub 4/O/sub 7/ crystal were determined from the measured parameters of a delay line with double electrode interdigital transducers (IDT). Since the frequency response at the third harmonic was in good agreement with the SAW equivalent circuit model, it was possible to determine the BGW parameters. It was found that the coupling coefficient of BGW is very sensitive to aluminum layer thickness variations. Good agreement was found between calculated and measured parameters of BGW from an extrapolation to the zero layer thickness.<>

Keywords

frequency response; interdigital transducers; lithium compounds; nonlinear acoustics; piezoelectric materials; surface acoustic wave delay lines; surface acoustic waves; Al; Al layer thickness variations; BGW parameters; Bleustein-Gulyaev waves; Li/sub 2/B/sub 4/O/sub 7/; Li/sub 2/B/sub 4/O/sub 7/ crystal; SAW equivalent circuit model; coupling coefficient; delay line; double electrode interdigital transducers; frequency response; third harmonic; zero layer thickness; Aluminum; Coupling circuits; Delay lines; Electrodes; Equivalent circuits; Extrapolation; Frequency response; Surface acoustic waves; Thickness measurement; Transducers;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.464833

Filename

464833