Abstract
The propagation velocity of surface acoustic waves in piezoelectric materials is affected by the presence of a bias electric field. This effect can be theoretically described by introducing into the constitutive piezoelectric equations non linear terms involving second and higher order constants of the material. In the present paper , a theoretical model is proposed which permits to evaluate surface acoustic wave (SAW) velocity in presence of a uniform electric field under the simplifying assumption of small amplitude acoustic waves. The dependence of the surface acoustic wave velocity on the strenght of the applied electric field has been calculated for surface acoustic waves propagating along Z direction of a Ycut LiNbO crystal under an electric field applied along Y direction. Theoretical values of the fractional velocity changes versus applied electric field are reported and compared with experimental results. 3
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
