Abstract
Domain engineered structures prepared in PZT ceramics are studied for the possible application for piezoelectric resonators. Bar shaped resonators segmented into several domain volumes with antiparallel polarization show multiplication of the fundamental resonant frequency for the length extensional vibration mode. Radial vibration mode for thin disc with two radial domain segments poled in antiparallel direction is further studied theoretically and experimentally. Results reveal that the fundamental resonance could not be shifted by the domain volumes distribution in the resonator, on the contrary to bar resonators. Temperature coefficients for the fundamental resonant frequency of twin domain disc are calculated and measured as a function of domain segment distribution. They were found to be independent on the domain size. Higher overtones might change their frequencies as a function of domain distribution.
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