A nonlinear thermodynamic theory is used to predict the equilibrium polarization states and dielectric properties of ferroelectric thin films grown on dissimilar substrates which induce anisotropic strains in the film plane. The misfit strain-temperature phase diagrams are constructed for single-domain PbTiO3 and Pb0.35Sr0.65TiO3 films on orthorhombic substrates. It is shown that the in plane strain anisotropy may lead to the appearance of new phases which do not form in films grown on cubic substrates. The strain-induced dielectric anisotropy in the film plane is also calculated and compared with the anisotropy observed in Pb0.35Sr0.65TiO3 films deposited on NdGaO3. (C) 2005 American Institute of Physics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据