Microstructure and ferroelectric properties of high-entropy perovskite oxides with A-site disorder

High-entropy oxides with complex compositions can be designed as new ferroelectric materials with interesting physical consequences. Here, a series of high-entropy perovskite ceramics (Bi0.2Na0.2Ba0.2Sr0.2Ca0.2TiO3, Bi0.2Li0.2Ba0.2Sr0.2Pb0.2TiO3, Bi0.2Na0.2Ba0.2Sr0.2Pb0.2TiO3, Bi0.2K0.2Ba0.2Sr0.2Pb0.2TiO3, and Bi0.2Ag0.2Ba0.2Sr0.2Pb0.2TiO3) was proposed, which selected various elements to diminish the formational enthalpy and thus to achieve a...