Influence of BaZrO3 additive on the energy-storage properties of 0.775Na0.5Bi0.5TiO3-0.225BaSnO3 relaxor ferroelectrics
Influence of BaZrO3 additive on the energy-storage properties of 0.775Na0.5Bi0.5TiO3-0.225BaSnO3 relaxor ferroelectrics
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DOI：
10.1016/j.jallcom.2018.10.025
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发表时间：
2019-02
影响因子：
6.2
通讯作者：
Lei Zhang;Y. Pu;Min Chen
中科院分区：
文献类型：
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作者：
Lei Zhang;Y. Pu;Min Chen
采用固相法制备了致密的（1-x）（0.775NBT-0.225BSN）-xBZ三元系陶瓷，系统地研究了其介电和铁电性能。XRD和拉曼分析表明，BZ的加入增强了0.775NBT-0.225BSN弛豫体系的结构复杂性和相扩散。随着BZ含量的增加，平均晶粒尺寸大大减小。介电研究表明，当x ≥ 0.2时，分散弛豫相变开始转变为扩散相变。沿着BZ含量的增加，P-E环斜率逐渐减小，能量损失逐渐减小。当x = 0.2时，由于P-E环较细，Pm（~20 μ C/cm~2）和Eb（245 kV/cm）较高，Wd达到2.08 J/cm~3，η达到88.8%。因此，该三元系陶瓷可能是NBT基储能陶瓷的良好候选材料。
Dense (1-x)(0.775NBT-0.225BSN)-xBZ ternary ceramics were fabricated by solid state methods and their dielectric and ferroelectric properties were systematically investigated. XRD and Raman analysis indicate that the structure complexity and phase diffusion were enhanced in 0.775NBT-0.225BSN relaxor system with BZ addition. With increasing the contents of BZ, average grain size greatly decreases. Dielectric study shows that dispersive relaxor-like behavior was beginning to convert to diffusive phase transition whenx≥ 0.2. Along with increasing the BZ contents, the slop ofP-Eloops and the energy-loss can gradually decrease. Whenx= 0.2, both a high Wdof 2.08 J/cm3andηof 88.8% were achieved, due to the slimerP-Eloops, the highPm(∼20 μC/cm2) andEb(245 kV/cm). As a result, the ternary ceramics system may be a good candidate for energy-storage ceramics of NBT-based materials.