Ferroelectricity in the Compound Bi4Ti3O12

Abstract

Some ferroelectric and crystallographical properties of the compound ${\mathrm{Bi}}_4$ ${\mathrm{Ti}}_3$ ${\mathrm{O}}_{12}$ are presented. The compound has a dielectric maximum at 685°C on increasing temperature and at 670°C on decreasing temperature. At these temperatures, an endothermic peak and an exothermic peak, respectively, occur. Ferroelectricity was observed along the $c$ axis of the single crystal of this compound.