SrTiO₃多孔質材中における周期配列ナノ強誘電要素の力学的創出に関するPhase-Field解析

抄録

Ferroelectric behavior in strained SrTiO₃ nano porous is investigated using phase-field simulations. We find, in the paraelectric nano-porous, the polarization vortex emerges around each pore due to strain concentration and forms a periodically arrayed ferroelectric nano region. The ferroelectric region expands and connects each other with increasing strain, and finally forms a ferroelectric network, which can be regarded as a nanostructure. Our finding provides a new strategy to tailor ferroelectric nano structure through mechanical load.