On the dynamic measurement of constants of piezoelectric single-crystal materials

An error in the estimation of piezoelectric material properties can arise when applying the common measurement procedures in the IEEE Standard to determining constants of piezoelectric materials with exceptionally high coupling coefficients, in particular, single-crystal materials. The probable sources of inaccuracy in the resonance-antiresonance method, when applied to bar samples made of single crystals are considered. An additional method of dynamic measurements that helps to avoid the shortcomings of the resonance- antiresonance method is proposed, and its application is illustrated with examples of measurement of single-crystal piezoelements of different compositions.