Abstract The microstructure, dielectric and piezoelectric properties of Zr doped BaTiO3 ceramics sintered at optimum temperature, are investigated. High energy ball milling technique is adopted to realize nano-sized powders of Ba(Zr0.15Ti0.85)O3 ceramics. Increased boundary mobility of fine powders aided to obtain a relative density of >98.8% of theoretical density corresponding to ceramics under study. Internal stresses in these ceramics are found to be relieved by grain-boundary sliding. The Ba(Zr0.15Ti0.85)O3 ceramics synthesized at relatively low sintering temperatures exhibit remarkable, enhanced dielectric properties viz. improved polarization, high unipolar strain values comparable to Zr doped BaTiO3 single crystals of same composition, at relatively lower electric fields and also exhibit better fatigue tolerant properties. The underlying mechanisms responsible for superior dielectric, ferroelectric and piezoelectric properties are discussed.

中文翻译：

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Ba(Zr0.15Ti0.85)O3铁电陶瓷的改进性能和抗疲劳性能

摘要 研究了Zr掺杂BaTiO3陶瓷在最佳温度下烧结的微观结构、介电和压电性能。采用高能球磨技术实现Ba(Zr0.15Ti0.85)O3陶瓷纳米粉体。细粉末边界迁移率的增加有助于获得与所研究的陶瓷相对应的理论密度 > 98.8% 的相对密度。发现这些陶瓷中的内应力可以通过晶界滑动得到缓解。在相对较低的烧结温度下合成的 Ba(Zr0.15Ti0.85)O3 陶瓷表现出显着的增强介电性能，即。改进的极化，高单极应变值与相同成分的 Zr 掺杂 BaTiO3 单晶相当，在相对较低的电场下，还表现出更好的耐疲劳性能。