A1.4 Electrical and Electromechanical Properties of Single Crystalline Li(Nb,Ta)O3 Solid Solutions up to 700 °C
- SMSI 2021
2021-05-03 - 2021-05-06
- SMSI 2021 - Sensors and Instrumentation
- A1 Piezoelectric High-temperature Sensors I (Special Session)
- Y. Suhak, B. Jerliu, H. Fritze - Clausthal University of Technology, Goslar (Germany), S. Ganschow - Leibniz-Institut für Kristallzüchtung, Berlin (Germany), D. Roshchupkin, B. Red’kin - Russian Academy of Science, Moscow (Russia), S. Sanna - Justus Liebig University Gießen, Gießen (Germany)
- 46 - 47
The electrical conductivity, resonance frequency and acoustic loss are determined for piezoelectric resonators which are based on Czochralski grown Li(Nb,Ta)O3 solid solutions with different Nb/Ta ratios up to 700 °C. Experimental methods include impedance spectroscopy and resonant impedance spectroscopy. Further, the long-term behaviour of resonant properties is examined at hightemperatures. After operation for about 400 hours in air at 700 °C a LiNb0.5Ta0.5O3 resonator shows an increase in resonance frequency only by 0.1 %.