Fabrication of Artificial Ferroelectric Domain-Walls using Bicrystal method

铁电材料作为铁电存储器、光学滤波器、压电器件和各种传感器在工业上有着广泛的应用。铁电材料中相邻畴之间的边界，即畴壁，对铁电材料的性能有很大的影响。然而，由于畴壁的表征困难，畴壁的结构和功能还没有得到很好的理解。在这项研究中，我们成功地制造了人工畴壁使用双晶体实验。利用扫描透射电子显微镜和电学测试系统对铁电畴壁的结构和性能进行了表征。

Ferroelectric is widely used for industry as a FeRAM, optical filters, piezoelectric devices and various sensors. A boundary between neighboring domains, namely, "domain-wall" has strong influences on the properties of ferroelectric. However, structure and functions of the domain-walls are not well understood due to the difficulty of characterization of domain-walls. In this study, we successfully fabricated artificial domain-walls using a bicrystal experiment. As a result, the structure and property of the ferroelectric domain-walls have been well characterized by scanning transmission electron microscopy and electric measurement systems.