High-Entropy Alloys and Materials publishes original, peer-reviewed papers on metallic, ceramic, polymeric, organic and semiconducting high-entropy materials and medium-entropy materials that are either single phase or multi-phase. The journal covers all properties of high-entropy materials including physical (thermal expansion, heat capacity, conductivity), mechanical (quasi-static, creep, fatigue), functional (magnetic, semiconducting, optical, catalytic, antibacterial) and both corrosion and oxidation behaviors. Papers combining properties with analytical or computational modelling (first-principles density-functional theory, molecular dynamics, CALPHAD, Monte Carlo simulations, phase-field modelling) and advanced microstructural characterization are published. Papers on the thermodynamics, transformation kinetics and diffusion behavior of high-entropy materials are welcome. Papers on practical applications of high-entropy materials are particularly encouraged, as are papers on structure/property relationships and accelerated design. Practical uses of high-entropy materials of interest include: high temperature applications such as for power plants, gas turbine blades, and concentrated solar power; permanent magnets and soft magnets for motors and transformers; thermoelectric materials, biomaterials for prostheses, corrosion-resistant materials, cryogenic materials, and optically absorbent materials. Papers on sustainability, recyclability and the use of net-shape processing are of particular interest.