A Novel Cut Quartz Crystal Plate with High Thermal Stability at a Lower Turnover Temperature

To develop novel quartz crystal resonators for better performance in special applications, the frequency-temperature relations of finite quartz crystal plates are refined to locate optimal orientations. Continuing with earlier efforts, we went into details of vibrations of a finite quartz crystal plate for better frequency-temperature relation of a tribally-rotated cut with turnover temperature at about -75°C. The calculation is performed by using the Mindlin plate theory with the incremental thermal field theory. The analysis showed that the frequency-temperature is better than the SC-cut in the vicinity of turnover temperature.