熱処理した硫酸グリシンの強誘電分域構造の経時変化

抄録

Changes in ferroelectric domain structures of triglycine sulfate after heat treatment have been examined in detail by the nematic liquid crystal method. The observed time evolution of domain structures can be explained in terms of an accumulation of local polarization reversal occurring spontaneously by the surface tension at the domain walls. Under ordinary circum-stances, such a polarization reversal is accompanied by subsequent reversal of the neighboring polarization in the opposite direction, conserving the total polarization during the evolution. Since the evolution does not progress unless compensating charges are supplied to the reversed polarization, the surface conductivity, therefore, influences the evolution of domain structures.