Experimental measurements of velocities and temperature effects for SAW on Y-rotated and X-cuts of Langasite

A systematic experimental investigation of SAW properties on Langasite is presented on a series of Y-rotated plates. Phase velocities have been measured for many orientations and compared to theoretical predictions based on already published material constants. A good agreement is found between the experiments and computations based on data published by Sakharov et al. [1995]. Temperature dependance has been also measured and compared to theoretical calculations based on the classical method of variation of elastic constants. Compensated cuts have been found for all three orientations. Additional measurements of SAW propagation on X cut plates will be also presented.