Experimental temperature and stress sensitivities of surface acoustic wave quartz cuts

The sensitivity of surface-acoustic-wave devices to quasi-static in-plane stresses has been determined in the case of thin quartz crystal plates, as a function of crystal anisotropy. Stress sensitivity is compared to static temperature sensitivity calculated by perturbation method. Several orientations of quartz crystal exist, exhibiting both zero temperature sensitivity and zero stress sensitivity for planar isotropic stresses. Two interesting singly rotated quartz crystal cuts (Θ=0) have been theoretically determined, and one has been experimentally tested. First-order temperature compensation was checked and stress sensitivity was measured by a diametral compression of circular quartz delay lines. Experimental results and theoretical predictions are compared