Department of Electronic Science and Technology, Huazhong University of Science and Technology, China [2009AA03Z445]; Department of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan, China
机构署名：
本校为第一且通讯机构
院系归属：
电气与电子工程学院
摘要：
Nanodomains and grain-size effects in BaTiO3 have been studied theoretically. In this article, we have calculated the long-range Coulomb interaction between ferroelectric nanodomains in a single BaTiO3 grain, and obtained information on the domain structure at various temperatures and grain sizes. The relation between transition temperature and the grain size is obtained by incorporating the domain-wall energy, the surface energy, and the stress energy into the Landau–Ginzburg free-energy density. The results show that 180° domains exist in f...
