Electromechanical coupling coefficient k31eff for arbitrary aspect ratio resonators made of [001] and [011] poled (1−x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 single crystals
作者： Chuanwen Chen , Rui Zhang , Zhu Wang , Wenwu Cao
DOI: 10.1063/1.3086653
关键词: Quartz resonator 、 Electromechanical coupling coefficient 、 Aspect ratio 、 Resonator 、 Energy conversion efficiency 、 Electromechanical resonance 、 Materials science 、 Optoelectronics
摘要: The dependence of k31eff on the aspect ratio G=l1/l2 has been calculated for resonators made [001] poled 0.67Pb(Mg1/3Nb2/3)O3–0.33PbTiO3 (PMN-0.33PT) and [011] 0.71Pb(Mg1/3Nb2/3)O3–0.29PbTiO3 (PMN-0.29PT). Based derived unified formula, lateral electromechanical energy conversion efficiency |k31eff|2 decreases with G PMN-0.33PT but increases PMN-0.29PT.
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