Entropy-stabilized oxides
Open Access
- 29 September 2015
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Communications
- Vol. 6 (1), 8485
- https://doi.org/10.1038/ncomms9485
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.This publication has 40 references indexed in Scilit:
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