The critical role of stereochemically active lone pair in introducing high temperature ferroelectricity

Rafikul Ali Saha, Anita Halder, Desheng Fu +3

In this paper a comparative structural, dielectric and magnetic study of two langasite compounds Ba${}_3$TeCo${}_3$P${}_2$O${}_{14}$ (absence of lone pair) and Pb${}_3$TeCo${}_3$P${}_2$O${}_{14}$…