From order to disorder: Multicomponent layered carbides suggest tipping point for ‘high entropy’ classification

Microscopic view of layered carbides, showcasing the 'high entropy' classification of multicomponent materials.

The term “high entropy” originally was applied to any material containing five or more elements in near-equimolar proportions, but some groups have called attention to the nuances that are missed with this generous usage. A multi-institution study led by Purdue University characterized layered carbides to clarify when the classification of multicomponent materials tips from “compositionally complex” to “high entropy.”

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