Title :
New strong piezoelectric La3Ga5.5Nb0.5 O14 with temperature compensation cuts
Author :
Pisarevsky, Yu.V. ; Senushencov, P.A. ; Popov, P.A. ; Mill, B.V.
Author_Institution :
Inst. of Crystallography, Moscow, Russia
fDate :
31 May-2 Jun 1995
Abstract :
Temperature dependences of various important FC applications parameters of La3Ga5.5Nb0.5O14 (LGN) single crystals were measured. These are sound velocities within range 77-370 K, dielectric permittivities within 4.2-400 K, thermal conductivity within 50-300 K. From above data temperature dependences a full set of elastic and piezoelectric constants were calculated. Results show existence of cuts with zero temperature coefficients of resonant frequencies and sound velocities. We found an anomaly in derivative of ε33 near 50 K. Thermal conductivity behavior shows on disorder in crystal structure
Keywords :
compensation; crystal resonators; elastic constants; permittivity; piezoelectric materials; thermal conductivity; 4.2 to 400 K; 50 to 300 K; 77 to 370 K; La3Ga5.5Nb0.5O14; dielectric permittivities; elastic constants; piezoelectric constants; resonant frequencies; sound velocities; temperature compensation cuts; thermal conductivity; zero temperature coefficients; Acoustic measurements; Acoustic waves; Crystals; Dielectric constant; Dielectric measurements; Niobium; Resonant frequency; Temperature dependence; Temperature measurement; Thermal conductivity;
Conference_Titel :
Frequency Control Symposium, 1995. 49th., Proceedings of the 1995 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-2500-1
DOI :
10.1109/FREQ.1995.484068
