A2.5 Electrical and Electromechanical Properties of Single Crystalline Li(Nb,Ta)O3 Solid Solutions for High-Temperature Actuator Applications
- SMSI 2020
(did not take place because of Covid-19 virus pandemic)
- SMSI 2020 - Sensors and Instrumentation
- A2 Piezoelectric High-temperature Sensors
- 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 - Institute of Microelectronics Technology and High Purity Materials, Chernogolovka (Russia), S. Sanna - Justus Liebig University Gießen, Gießen (Germany)
- 57 - 58
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 resonance ultra-sound spectroscopy. Further, the long-term behaviour of resonant properties is examined at high-temperatures. After about 400 hours at 700 °C a LiNb0.5Ta0.5O3 resonator shows an increase in reso-nance frequency only by 0.1%.