Entropy-stabilized oxides.

Published

Journal Article

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.

Full Text

Duke Authors

Cited Authors

  • Rost, CM; Sachet, E; Borman, T; Moballegh, A; Dickey, EC; Hou, D; Jones, JL; Curtarolo, S; Maria, J-P

Published Date

  • September 29, 2015

Published In

Volume / Issue

  • 6 /

Start / End Page

  • 8485 -

PubMed ID

  • 26415623

Pubmed Central ID

  • 26415623

Electronic International Standard Serial Number (EISSN)

  • 2041-1723

International Standard Serial Number (ISSN)

  • 2041-1723

Digital Object Identifier (DOI)

  • 10.1038/ncomms9485

Language

  • eng