Abstract
High-entropy perovskite oxides with ferroelectricity have not been reported so far because these oxides have highly symmetric cubic structures. In this study, we propose a strategy of introducing morphotropic phase boundaries to obtain ferroelectricity in high-entropy perovskite oxides. We demonstrate the feasibility of the concept using (1−x)Pb(Mg0.2Zn0.2Nb0.2Ta0.2W0.2)O3–xPbTiO3 as a model system. It is anticipated that this concept can be applied to design and prepare various high-entropy ferroelectric and piezoelectric perovskite oxides.
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