材料科学
拉曼光谱
电介质
陶瓷
三元运算
弛豫铁电体
铁电性
相(物质)
三元数制
粒度
扩散
分析化学(期刊)
矿物学
热力学
复合材料
化学
光学
光电子学
物理
有机化学
色谱法
程序设计语言
计算机科学
作者
Lei Zhang,Yongping Pu,Min Chen
标识
DOI:10.1016/j.jallcom.2018.10.025
摘要
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 when x ≥ 0.2. Along with increasing the BZ contents, the slop of P-E loops and the energy-loss can gradually decrease. When x = 0.2, both a high Wd of 2.08 J/cm3 and η of 88.8% were achieved, due to the slimer P-E loops, the high Pm (∼20 μC/cm2) and Eb (245 kV/cm). As a result, the ternary ceramics system may be a good candidate for energy-storage ceramics of NBT-based materials.
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