title: Entropy-stabilized oxides.
abstract: Configurational disorder can be compositionally engineered into mixed oxide by populating a single sublattice with many distinct cations. The formulations promote novel and entropy-stabilized forms of crystalline matter where metal cations are incorporated in new ways. Here, through rigorous experiments, a simple thermodynamic model, and a five-component oxide formulation, we demonstrate beyond reasonable doubt that entropy predominates the thermodynamic landscape, and drives a reversible solid-state transformation between a multiphase and single-phase state. In the latter, cation distributions are proven to be random and homogeneous. The findings validate the hypothesis that deliberate configurational disorder provides an orthogonal strategy to imagine and discover new phases of crystalline matter and untapped opportunities for property engineering.
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Christina M
authors.initials: CM
authors.lastname: Rost
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Edward
authors.initials: E
authors.lastname: Sachet
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Trent
authors.identifier: http://orcid.org/0000-0003-4916-9678
authors.initials: T
authors.lastname: Borman
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Ali
authors.initials: A
authors.lastname: Moballegh
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Elizabeth C
authors.initials: EC
authors.lastname: Dickey
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Dong
authors.initials: D
authors.lastname: Hou
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Jacob L
authors.initials: JL
authors.lastname: Jones
authors.affiliation: Department of Mechanical Engineering and Materials Science, Center for Materials Genomics, Duke University, Durham, North Carolina 27708, USA.
authors.forename: Stefano
authors.initials: S
authors.lastname: Curtarolo
authors.affiliation: Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA.
authors.forename: Jon-Paul
authors.initials: JP
authors.lastname: Maria