Size Effect of Nano-grained Ferroelectric Ceramics Fabricated byAerosol Deposition Method

我们证明了晶粒尺寸对两步烧结法和气溶胶沉积法制备的钛酸钡基陶瓷的介电性能的影响。在纯BaTiO 3陶瓷的情况下，介电常数在1 μm附近出现最大值的晶粒尺寸效应被解释为畴壁贡献和晶界效应的叠加效应。此外，（Ba，Ca）TiO3和Ba（Zr，Ti）O3陶瓷，这有望成为下一代介电材料的尺寸效应进行了研究。

We demonstrated the grain size effect on the dielectric properties of BaTiO3 based ceramics fabricated by a two-step sintering method and aerosol deposition method. In the case of pure BaTiO3 ceramics, the grain size effect, where the permittivity showed a maximum at around 1 μm, was interpreted as the superposition effect of domain-wall contributions and grain boundary effect. Moreover, the size effects of (Ba,Ca)TiO3 and Ba(Zr,Ti)O3 ceramics, which were expected to be next-generation dielectric materials, were also investigated.