Abstract
The structure and electrical properties of Ba0.85Ca0.15Zr0.1Ti0.9O3-xBiFeO3 ceramics (x = 0 %, 3 %, 8 % and 15 %) were investigated. The prepared samples show perovskite structure, and there is no detected second phase. The grain size of all ceramic samples doped with BiFeO3 is significantly reduced. The doped samples have obvious relaxation characteristics, showing obvious dispersion phase transition and frequency dispersion. The P-E curve becomes thin with the increase of doping amount, but it changes reversely under higher doping content. For sample with the doping amount of 8 %, a thin and long hysteresis loop is observed, and the sample has the best energy storage characteristics with the energy storage density of 0.57 J/cm3 and the energy storage efficiency of 91.3 %. This study provides a method to improve the energy storage density and efficiency of BCZT ceramics.
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