Affiliation:
1. Department of Materials Science and Engineering The Pennsylvania State University University Park Pennsylvania USA
2. Department of Physics The Pennsylvania State University University Park Pennsylvania USA
3. Department of Physics and Astronomy James Madison University Harrisonburg Virginia USA
Abstract
AbstractHigh‐entropy materials defy historical materials design paradigms by leveraging chemical disorder to kinetically stabilize novel crystalline solid solutions comprised of many end‐members. Formulational diversity results in local crystal structures that are seldom found in conventional materials and can strongly influence macroscopic physical properties. Thermodynamically prescribed chemical flexibility provides a means to tune such properties. Additionally, kinetic metastability results in many possible atomic arrangements, including both solid‐solution configurations and heterogeneous phase assemblies, depending on synthesis conditions. Local disorder induced by metastability, and extensive cation solubilities allowed by thermodynamics combine to give many high‐entropy oxide systems utility as electrochemical, magnetic, thermal, dielectric, and optical materials. Though high‐entropy materials research is maturing rapidly, much remains to be understood and many compositions still await discovery, exploration, and implementation.
Funder
National Science Foundation
Subject
Materials Chemistry,Ceramics and Composites
Cited by
7 articles.
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