Temperature and frequency electromechanical characterization of LiNbO3type ceramics
Adel Megriche, Paul Gonnard, Laurent Lebrun, Michel Troccaz · Ferroelectrics · 1999
LiNbO3 ceramics substitued with Na (0.03) and with MnO2 addition are prepared. The temperature and frequency dependence of some piezoelectric coefficients is studied. A good stability is observed up to 500°C when working at 100 kHz or 1 MHz. A sensor device is realized and its response to an acoustic signal is observed versus temperature.