What is in a Name: Defining -High Entropy- Oxides

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 materials crystallinity, composition, and mixing length scales in determining its true definition.

References in corpus (15)

• Magnetic Pyrochlore Oxides
• High-entropy high-hardness metal carbides discovered by entropy descriptors
• Colossal dielectric constant in high entropy oxides
• A Step Forward from High-Entropy Ceramics to Compositionally Complex Ceramics: A New Perspective
• High entropy oxides: An emerging prospect for magnetic rare earth - transition metal perovskites
• Frustrated quantum rare-earth pyrochlores
• Long range antiferromagnetic order in a rocksalt high entropy oxide
• Single Crystal High Entropy Perovskite Oxide Epitaxial Films
• Ab initio vibrational free energies including anharmonicity for multicomponent alloys
• High-entropy van der Waals materials formed from mixed metal dichalcogenides, halides and phosphorus trisulfides
• Designer Magnetism in High Entropy Oxides
• Epitaxial stabilization of ultra thin films of high entropy perovskite
• Magnetic anisotropy in single crystal high entropy perovskite oxide La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 films
• Unexpected crystalline homogeneity from the disordered bond network in La(Cr0.2Mn0.2Fe0.2Co0.2Ni0.2)O3 films
• Applying configurational complexity to the 2D Ruddlesden-Popper crystal structure

Cited by in corpus (10)

• Understanding the role of entropy in high entropy oxides
• High entropy ceramics for applications in extreme environments
• Disorder by Design: Unveiling Local Structure and Functional Insights in High Entropy Oxides
• Impact of synthesis method on the structure and function of high entropy oxides
• Local structure maturation in high entropy oxide (Mg,Co,Ni,Cu,Zn)1-x(Cr,Mn)xO thin films
• Embracing Disorder in Quantum Materials Design
• High-entropy silicide superconductors with W${}_5$Si${}_3$-type structure
• Hole doping in compositionally complex correlated oxide enables tunable exchange biasing
• Extreme disorder in crystalline perovskite oxide: a new paradigm in quantum materials research
• More is different: How chemical complexity influences stability in high entropy oxides