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Influence of BaZrO3 additive on the energy-storage properties of 0.775Na0.5Bi0.5TiO3-0.225BaSnO3 relaxor ferroelectrics
Journal of Alloys and Compounds ( IF 6.2 ) Pub Date : 2019-02-01 , DOI: 10.1016/j.jallcom.2018.10.025
Lei Zhang , Yongping Pu , Min Chen

Abstract 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.

中文翻译:

BaZrO3添加剂对0.775Na0.5Bi0.5TiO3-0.225BaSnO3弛豫铁电体储能性能的影响

摘要 采用固态方法制备了致密(1-x)(0.775NBT-0.225BSN)-xBZ三元陶瓷,并对其介电和铁电性能进行了系统研究。XRD 和拉曼分析表明,添加 BZ 的 0.775NBT-0.225BSN 弛豫体系的结构复杂性和相扩散得到增强。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,类似色散弛豫的行为开始转变为扩散相变。随着BZ含量的增加,PE环的斜率和能量损失会逐渐减少。当 x = 0.2 时,由于更细的 PE 回路、高 Pm (~20 μC/cm2) 和 Eb (245 kV/cm),实现了 2.08 J/cm3 的高 Wd 和 88.8% 的 η。因此,
更新日期:2019-02-01
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