Structural Study of Ferroelectrics under Applied Electric Field

Abstract

Two topics on the recent structural studies of perovskite-type ferroelectrics under applied electric field are introduced. One is on the time-course measurement associated with the polarization reversal in a BaTiO₃ single crystal capturing the change in lattice strain of millionths of a second. The other is on the electric field induced large lattice-strain in pseudocubic Bi(Mg_1/2Ti_1/2)O₃-modified BaTiO₃-BiFeO₃ lead-free piezoelectric ceramics. Both experiments are carried out at SPring-8.