Title :
Measured properties of doubly rotated dilithium tetraborate (Li/sub 2/B/sub 4/BO/sub 7/) resonators and transducers
Author :
Kosinski, John A. ; Ballato, Arthur ; Lu, Yicheng
Author_Institution :
US Army LABCOM, Ft. Monmouth, NJ, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
Dilithium tetraborate plates, cut to the nominal angles of cut of (YXwl)40 degrees /33 degrees (TA-cut) and (YXwl)19 degrees /56 degrees (TC-cut), have been supplied by a crystal grower and have been processed into plate resonators. The mode spectra and electrical circuit parameters of the resonators have been examined for the fundamental, third, and fifth harmonics for all three thickness modes of the resonators. The observed values of frequency constants and piezoelectric coupling are in good agreement with the predicted values. The frequency-temperature behavior of the zero-temperature coefficient cuts has also been measured.<>
Keywords :
crystal resonators; lithium compounds; piezoelectric transducers; ultrasonic transducers; TA-cut; TC-cut; doubly rotated Li/sub 2/B/sub 4/O/sub 7/; electrical circuit parameters; fifth harmonics; frequency constants; frequency-temperature behavior; mode spectra; piezoelectric coupling; plate resonators; thickness modes; third harmonics; transducers; zero-temperature coefficient cuts; Coupling circuits; Frequency measurement; Optical resonators; Piezoelectric transducers; Rotation measurement; Stability; Tellurium; Temperature measurement; Thermal expansion; Velocity measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
