Electromechanical coupling coefficient of 0.70Pb(Mg1∕3Nb2∕3)O3–0.30PbTiO3 single crystal resonator with arbitrary aspect ratio
作者： Naixing Huang , Rui Zhang , Wenwu Cao
DOI: 10.1063/1.2784949
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摘要: Based on mode coupling theory and the fundamental energy ratio definition of electromechanical coefficient, a unified formula has been derived to calculate effective coefficient keff 0.70Pb(Mg1∕3Nb2∕3)O3–0.30PbTiO3 (PMN-30%PT) ferroelectric single crystal cylindrical resonator with arbitrary aspect ratio. The dependence PMN-30%PT shows similar characteristics as that conventional piezoelectric ceramics Pb(ZrxTi1−x)O3 (PZT). However, compared PZT-5 ceramics, smaller where changes dramatically there is also stronger between thickness radial modes causing much larger splitting.
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