Phase diagram and electrostrictive properties of Bi0.5Na0.5TiO3–BaTiO3–K0.5Na0.5NbO3 ceramics

作者: Shan-Tao Zhang , Feng Yan , Bin Yang , Wenwu Cao

DOI: 10.1063/1.3491839

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摘要: Phase diagram of Bi0.5Na0.5TiO3–BaTiO3–K0.5Na0.5NbO3 ternary system has been analyzed and (0.94−x)BNT–0.06BT–xKNN (0.15≤x≤0.30) ceramics have prepared investigated. Pseudocubic structures were confirmed by x-ray diffractions its preliminary Rietveld refinements. P-E, S-E, S-P2 profiles (where P, E, S denote polarization, electric field, strain, respectively) indicate electrostrictive behavior all ceramics. The compositions with x=0.20 0.25 show pure characteristics. dissipation energy, coefficient determined compared other lead-free lead-containing electrostrictors. can reach as high 0.026 m4/C2, about 1.5 times the value traditional Pb-based

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