Ferroelectricity in bis(ethylammonium) pentachlorobismuthate(iii): synthesis, structure, polar and spectroscopic properties

Abstract

A brief description of the thermal, structural and dielectric properties of bis(ethylammonium) pentachlorobismuthate(III) ferroelectric with P_s that equals to 1.4 μC cm⁻² at 180 K is presented. This paper focuses in particular on the molecular mechanism of a phase transition that is related mainly to the deformation of the anionic sublattice confirmed by temperature-variable powdered UV-Vis spectroscopy.