Origin of Ferroelectricity in Orthorhombic LuFeO${}_3$

Ujjal Chowdhury, Sudipta Goswami, Amritendu Roy +13

We demonstrate that small but finite ferroelectric polarization ($\sim$0.01 $\mu$C/cm${}^2$) emerges in orthorhombic LuFeO${}_3$ ($Pnma$) at $T_N$ ($\sim$600 K) because of commensurate (…