Velocity angular dispersion of surface and bulk modes in LiTaO3 at hypersonic frequencies

Authors
Kuok, MH Ng, SC Zhang, VL Fan, HJ
Citation
Mh. Kuok et al., Velocity angular dispersion of surface and bulk modes in LiTaO3 at hypersonic frequencies, APPL PHYS L, 78(5), 2001, pp. 607-609
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
78
Issue
5
Year of publication
2001
Pages
607 - 609
Database
ISI
SICI code
0003-6951(20010129)78:5<607:VADOSA>2.0.ZU;2-L
Abstract
The existence of two surface acoustic waves, the Rayleigh wave and the seco nd leaky wave, on X-cut LiTaO3 has been detected using Brillouin scattering . Evidence of dispersion between ultrasonic and hypersonic velocities was f ound for both surface and bulk acoustic waves. Elastic constant values were determined from a simultaneous least-squares fit of the angular dispersion data for the longitudinal and the two transverse bulk acoustic modes. (C) 2001 American Institute of Physics.