PROPERTIES OF Ba-DOPED Sr2Bi4Ti5O18 FERROELECTRIC CERAMICS
作者： WEI WANG , XIAO-BING CHEN , XIANG-YU MAO , HAI-XIA FAN
DOI: 10.1080/10584580601085743
关键词: Dielectric 、 Curie temperature 、 Coercivity 、 Crystal structure 、 Ferroelectric ceramics 、 Materials science 、 Analytical chemistry 、 Lattice constant 、 Condensed matter physics 、 Barium 、 Ferroelectricity
摘要: ABSTRACT Sr2-xBaxBi4Ti5O18 (SBBTi-x,x = 0∼2.0) ceramic samples were prepared by using the standard solid-state reaction method and their crystal structure, ferroelectric dielectric properties examined. The results show that lattice constants increase with barium content. remnant polarization (2P r ) coercive field (Ec) decrease Ba-doping. As x 0, they 17.3 μ C/cm2 54 kV/cm, in case of 2.00, are 0.3 1.8 respectively. Ba content increases, Curie temperature (T c) SBBTi-x decreases from 285°C to a minimum value 150°C at 0.75, then increases reaches 300°C 2.00. < incorporation brings about pronounced relaxor behavior.
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