【摘要】 采用熔盐法制备了不同成分的Pb(Mg1/3Nb2/3)O3 PbTiO3二元系固溶体陶瓷,并研究了PbTiO3成分变化对该体系的介电性能、电致应变和电滞回线的影响。实验表明,随着PbTiO3含量的增加导致PMN基陶瓷的居里温度Tm逐渐升高,弥散相变度δ逐渐下降,最大介电常数εmax逐渐增大,最大电致应变也逐渐增大,但滞后性却逐渐增强。更多还原

【Abstract】 The pure perovskite （1-x）Pb(Mg_1/3Nb_2/3)O₃-xPbTiO₃ ceramics were prepared by molten salt synthesis using mixtures of NaCl-KCl salt. The dielectric, electrostrictive properties and electric hysteresis have been investigated. The results indicate that the Cure Temperature T_m, maximum dielectric constant ε_max and electrostriction strain S_max and the hysteresis increases as well as the diffuse phase transition δ decreases with PT content increased.更多还原