Title :
Thermal strain effects of acoustic surface waves in layered media
Author :
Yamanouchi, Kazuhiko ; Ishii, Morio ; Shibayama, Kimio
Author_Institution :
Tohoku University, Research Institute of Electrical Communication, Sendai, Japan
Abstract :
The propagation characteristics of acoustic surface waves in layered media are described. The strains caused in the film by thermal expansion can significantly affect the temperature coefficient of delay and the dispersion curves of velocity. Computed results for an SiO2/LiTaO3 structure are compared with experimentally measured values.
Keywords :
lithium compounds; silicon compounds; surface acoustic waves; thermal stresses; SAW; SiO2-LiTaO3; acoustic surface waves; dispersion curves; layered media; propagation characteristics; thermal strain effects;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19780530
