Title :
Theoretical and experimental study of superhigh electromechanical coupling surface acoustic wave propagation in KNbO3 single crystal
Author :
Yamanouchi, K. ; Odagawa, H. ; Kojima, T. ; Matsumura, T.
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
1/30/1997 12:00:00 AM
Abstract :
The propagation characteristics of surface acoustic waves (SAWs) and piezoelectric leaky surface waves in single crystal KNbO3 were investigated theoretically and experimentally. The results show that the electromechanical coupling coefficient of the surface wave propagating along the X-axis of the rotated Y-cut plane is very large, K 2=0.53, compared to K2 of 0.055 for LiNbO3
Keywords :
piezoelectric materials; potassium compounds; surface acoustic waves; KNbO3; KNbO3 single crystal; electromechanical coupling coefficient; piezoelectric leaky surface wave; surface acoustic wave propagation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970145