Polarization rotation in Bi${}_4$Ti${}_3$O${}_{12}$ by isovalent doping at the fluorite sublattice

Kevin Co, Fu-Chang Sun S. Pamir Alpay, Sanjeev K. Nayak

Bismuth titanate, Bi${}_4$Ti${}_3$O${}_{12}$ (BiT), is a complex layered ferroelectric material that is composed of three perovskite-like units and one fluorite-like unit stacked alterna…