S18 – Structure and Function in High-Entropy, Entropy-Stabilized, and Related Oxides

Compositionally complex oxides, including high-entropy and entropy-stabilized, have unique structure–property combinations compared to their enthalpy-stabilized analogs. Leveraging configurational entropy, these materials cover a broad and more flexible compositional space than many functional oxides, providing a path for reduced dependence on expensive and toxic materials with the equivalent, or superior, properties.

One barrier to fundamental and applied advances in these materials is the complexity of their structure–property relationships and potential lack of thermodynamic equilibrium, including interdependence of properties, structure, composition, and processing. Further, important structural features span several length scales, including local distortions (e.g., Jahn-Teller distortions), short-range order, strain, and nanoscale chemical segregation. This hierarchical structure and compositional complexity also increase computational costs, requiring advanced approaches to predicting and understanding structure and function in these exciting ceramics.

This symposium aims to provide a platform for interdisciplinary experts to highlight advances of compositionally complex oxides spanning properties, processing, structural characterization, and computation.

Proposed sessions

• ESOs in energy storage
• Characterization and quantification of structure and properties
• Understanding and predicting structure and properties through computation and data science
• Other

 Organizers

Megan Butala, University of Florida, USA, mbutala@ufl.edu

Juan Nino, University of Florida, USA, jnino@mse.ufl.edu

Valentino (Tino) Cooper, Oak Ridge National Laboratory, USA, coopervr@ornl.gov

Invited Speakers

Katherine Page University of Tennessee Knoxville / Oak Ridge National Laboratory

Xiaoqing Pan (UC Irvine)

John Heron (University of Michigan)

Zac Ward (Oak Ridge National Laboratory)

Alex Squires – University College London

Andrea Kirsch – University of Copenhagen

Solveig Aamlid – University of British Columbia