Title :
New sets of data for the thermal sensitivity of elastic coefficients of langasite and langatate
Author :
Bourquin, R. ; Dulmet, B.
Author_Institution :
Dept. LCEP, LCEP, Besancon, France
Abstract :
Thermal coefficients of elastic constants of LGS and LGT crystals have been determined from frequency-temperature curves of contoured resonators operating in thickness modes. Effect of the trapping of the vibration has been taking into account in order to improve the accuracy. In a first step, thermal sensitivity of stiffness coefficients in lagrangian description are obtained. Thermal sensitivity of usual elastic constants are further deduced.
Keywords :
crystal resonators; elastic constants; gallium compounds; lanthanum compounds; LGS crystals; LGT crystals; La2Ga5SiO14; La3Ga5.5Ta0.5O14; contoured resonators; elastic coefficients; elastic constants; frequency-temperature curves; lagrangian description; langasite crystals; langatate crystals; stiffness coefficients; thermal coefficients; thermal sensitivity; Crystals; Resonant frequency; Sensitivity; Temperature distribution; Temperature measurement; Temperature sensors;
Conference_Titel :
Frequency and Time Forum (EFTF), 2006 20th European
Conference_Location :
Braunschweig
Print_ISBN :
978-1-4673-2642-1
