Analysis of LGS resonators using the finite plate technique

This paper presents the results of an analysis using the finite plate technique of Y-cut langasite plan-parallel resonators with Al and Ag electrodes. We have extracted values for the piezoelectrically stiffened elastic stiffness c₆₆^D, the elastic stiffness c₆₆^E, the piezoelectric stress constant e₁₁, and the dielectric permittivity ε₁₁^S. The measured material constants are in very good agreement with other reported values. This paper will present our new results on the langasite samples, and will include a comparison between an analysis of the data using the measurement method recommended by the current IEEE Standard on Piezoelectricity and the finite plate technique.