Abstract
Interdigital transducers deposited on glass were used to couple acoustic waves in the 10–50-MHz frequency range into a b-cut (010) TGS plate from room temperature to slightly above the ferroelectric phase transition temperature, Tc = 49.1°C. The coupling peaked near Tc. Two major modes were observed. Evidence is given identifying the higher frequency mode with a longitudinal bulk wave and the lower frequency mode with a bulk shear wave. The velocities of the upper and lower frequency modes for temperatures near Tc were found from their resonant frequencies to be (4.18±0.06)×105 and (2.56±0.06)×105 cm/sec, respectively. Data on the temperature variation of the velocity of the low frequency mode are given. Estimates of the effective piezoelectric coupling constants for the two modes are deduced from the data.
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.
