[001]c 取向极化 0.24Pb(In₁/₂Nb₁/₂O₃-0.45Pb(Mg₁/₃Nb₂/₃)O₃-0.31PbTiO₃单晶中纵超声速和衰减的频散。
Frequency dispersion of longitudinal ultrasonic velocity and attenuation in [001]c-poled 0.24Pb(In₁/₂Nb₁/₂O₃- 0.45Pb(Mg₁/₃Nb₂/₃)O₃-0.31PbTiO₃ single crystal.
机构信息
Department of Physics, Harbin Institute of Technology, Harbin, China.
出版信息
IEEE Trans Ultrason Ferroelectr Freq Control. 2011 Aug;58(8):1669-73. doi: 10.1109/TUFFC.2011.1994.
Abstract
The frequency dispersion of ultrasonic velocity and attenuation in 001-poled 0.24Pb(in(1/2)Nb(1/2))O(3)-0.45Pb(Mg(1/3)Nb(2/3))o(3)-0.31PbTio(3) (PIN-0.45PMN-0.31PT) ternary single crystal were measured by ultrasonic spectroscopy from 25 to 100 MHz for the longitudinal wave. It was found that the velocity has a linear relationship with the frequency f, but the attenuation has a quadratic relation with f. The attenuation and frequency dispersion of the ternary system are lower than that of the (1-x)Pb(Mg(1/3)Nb(2/3))O(3)-xPbTiO(3) (PMN-PT) binary system and the coercive field also increased by a factor of 2.5, hence, the ternary single system is superior to the corresponding binary single-crystal system for high-frequency and high-power transducer applications.
摘要
001 取向的 0.24Pb(in(1/2)Nb(1/2))O(3)-0.45Pb(Mg(1/3)Nb(2/3))O(3)-0.31PbTiO(3)（PIN-0.45PMN-0.31PT）三元单晶中超声波速度和衰减的频散通过超声光谱法在 25 至 100MHz 范围内的纵波进行了测量。结果表明，速度与频率 f 呈线性关系，但衰减与 f 呈二次关系。三元体系的衰减和频散低于（1-x）Pb(Mg(1/3)Nb(2/3))O(3)-xPbTiO(3)（PMN-PT）二元体系，矫顽场也提高了 2.5 倍，因此三元单晶系统在高频和高功率换能器应用方面优于相应的二元单晶系统。
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