铁电材料是一类重要的功能材料，在军民领域有着广泛的应用。在“准同型相界”等概念的基础上，发展优化铁电材料性质的新方法及深入理解铁电畴等相关的基础性问题，对铁电材料的进一步发展至关重要。本项目拟基于已有的工作基础，在微结构层次上设计并制备几种0-3型极性半导体/铁电体复合陶瓷和薄膜，通过半导体中的电荷在半导体/铁电体界面处有序分布而构建局域电场；通过多种先进表征手段，系统研究此局域电场与微结构的关系以及局域电场对相结构、铁电畴及畴翻转、宏观电学性质及其温度稳定性等的影响。结合理论分析，建立“材料设计及制备-局域电场-相结构、铁电畴及畴翻转-宏观电学性质及其温度稳定性”之间的关联规律；探索通过构建组元界面处的局域电场来调控复合铁电材料电学性质的方法并理解其物理机制。本项目不仅可能获得优化铁电材料电学性质的新方法，从而提供新型高性能铁电材料，还将有助于加深对铁电畴相关的一些基础问题的理解。

Ferroelectric materials have wide and important applications in many fields. Based on "morphotropic phase boundary", developing a new method to optimize the electrical properties and further understanding the ferroelectric domain dynamics, etc., are very important for ferroelectrics. In this proposal, based on our research foundation, we will design and fabricate 0-3 type polar semicondoctor/ferroelectrics composite ceramics and thin films. A local electric field near the interfaces between semiconductor and ferroelectrics can be constructed by the ordered distribution of charges from semiconductor. Then, we will focus on the relationship between local field and microstructural parameters, as well as the effects of local field on phase structure, ferroelectric domains and domain switching, macroscopic electrical properties and their temperature stability. By further combining the experimental results with theoretical analysis, we hope we can probe the relationship between "design and fabrication-local electric field-phase structure, ferroelectric domains and domain switching-macroscopic electrical properties and their temperature stability". Hopefully, this proposal will not only provide a new method to optimize ferroelectric properties and thus high performance ferroelectric materials, but also is helpful for understanding the basic concepts of ferroelectrics.