DocumentCode
1533646
Title
Thermal sensitivity of elastic coefficients of langasite and langatate
Author
Bourquin, Roger ; Dulmet, Bernard
Author_Institution
Freq. & Time Dept., Ecole Nat. Super. de Mec. et des Microtech., Besancon, France
Volume
56
Issue
10
fYear
2009
fDate
10/1/2009 12:00:00 AM
Firstpage
2079
Lastpage
2085
Abstract
Thermal coefficients of elastic constants of langasite and langatate crystals have been determined from frequency-temperature curves of contoured resonators operating in thickness modes. The effect of the trapping of the vibration has been taken into account to improve the accuracy. In a first step, the thermal sensitivities of stiffness coefficients in Lagrangian description are obtained. Thermal sensitivities of the usual elastic constants are further deduced. Predictions of thermally compensated cuts are given.
Keywords
crystal resonators; elastic constants; gallium compounds; lanthanum compounds; piezoelectric materials; vibrational modes; LaGaSiO; LaGaTaO; Lagrangian description; contoured resonators; elastic coefficients; elastic constants; langasite crystal; langatate crystal; stiffness coefficients; thermal coefficients; thermal sensitivity; vibration trapping; Crystals; Frequency; Lagrangian functions;
fLanguage
English
Journal_Title
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher
ieee
ISSN
0885-3010
Type
jour
DOI
10.1109/TUFFC.2009.1291
Filename
5306755
Link To Document