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The grain boundary effect on electromechanical property of ferroelectric ceramics
Scripta Materialia ( IF 6 ) Pub Date : 2020-03-01 , DOI: 10.1016/j.scriptamat.2019.11.062
X.F. Zhao , A.K. Soh

Abstract The extended Eshelby method and Ginzburg-Landau theory have been employed to investigate the effect of grain boundary on the microstructure behavior and electromechanical property of BaTiO3 ceramics with no prior constraint on the grains’ shape and material parameters. The results obtained show that, the ferroelastic property of grain boundary plays an important role on the domain structure, ferroelectric and electromechanical properties of ferroelectric ceramics by affecting the elastic and electrostatic field of the material. The macro-properties of ferroelectric ceramics could be effectively functionalized by controlling the average grain size and ferroelastic field of the structure.

中文翻译:

晶界对铁电陶瓷机电性能的影响

摘要 采用扩展的Eshelby 方法和Ginzburg-Landau 理论研究了晶界对BaTiO3 陶瓷微观结构行为和机电性能的影响,而没有对晶粒形状和材料参数的先验限制。结果表明,晶界铁弹性通过影响材料的弹性场和静电场,对铁电陶瓷的畴结构、铁电和机电性能起着重要作用。通过控制结构的平均晶粒尺寸和铁弹性场,可以有效地功能化铁电陶瓷的宏观性能。
更新日期:2020-03-01
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