Abstract
High entropy oxides are emerging as an exciting new avenue to design highly tailored functional behaviors that have no traditional counterparts. Study and application of these materials are bringing together scientists and engineers from physics, chemistry, and materials science. The diversity of each of these disciplines comes with perspectives and jargon that may be confusing to those outside of the individual fields, which can result in miscommunication of important aspects of research. In this Perspective, we provide examples of research and characterization taken from these different fields to provide a framework for classifying the differences between compositionally complex oxides, high entropy oxides, and entropy stabilized oxides, which is intended to bring a common language to this emerging area. We highlight the critical importance of understanding a material's crystallinity, composition, and mixing length scales in determining its true definition.
| Original language | English |
|---|---|
| Article number | 110902 |
| Journal | APL Materials |
| Volume | 10 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 1 2022 |
Funding
This work is the result of discussions that took place at the Telluride Workshop on Compositionally Complex Oxides. All authors contributed equally. Work at Oak Ridge National Laboratory was supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences (BES), Materials Sciences and Engineering Division. The work at Los Alamos National Laboratory was supported by the NNSA\u2019s Laboratory Directed Research and Development Program and was performed, in part, at the CINT, an Office of Science User Facility operated for the U.S. Department of Energy Office of Science through the Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Triad National Security, LLC, for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218CNA000001). The National Science Centre, Poland, Project No. 2019/35/B/ST5/00888 (M.G. and A.M.-G.). KAKENHI, Grant-in-Aid on Innovative Areas (Grant No. 18H05462), Scientific Research(A) (Grant No. 18H03692), and Scientific Research(C) (Grant No. 20K05450), GRIMT program (Grant No. 202012-RDKGE-0065) at IMR, Tohoku University (A.Y.). C.M.R. and S.B.S. gratefully acknowledge the support from NSF through the Materials Research Science and Engineering Center Grant No. DMR 2011839. K.P. acknowledges support from the National Science Foundation (NSF), Division of Materials Research (DMR), Solid State Materials Chemistry (SSMC) program under grant DMR-2145174. S.J.M. acknowledges support from the National Science Foundation (NSF), Division of Materials Research (DMR), Ceramic (CER) program under Grant No. DMR 2047084.