Procedure for the characterisation of piezoelectric samples in non-standard resonant modes

The standard characterisation of piezoelectric materials requires specific boundary conditions. However the piezoelectric devices require quite different shaped materials and contour conditions from those that standard imposes. For these reasons, device characterisation usually requires models of equivalent electric circuits for non-electric properties as mechanical losses or coupling factors. Using a piezoelectric resonator model, similar to that used in the standard, we can make a more accurate characterisation of piezoelectric devices.