About this Abstract |
| Meeting |
TMS Specialty Congress 2026
|
| Symposium
|
4th World Congress on High Entropy Alloys (HEA 2026)
|
| Presentation Title |
Data-Driven Insights Into Magnetocaloric Behavior in High-Entropy Alloys |
| Author(s) |
Caroline Binde Stoco, Pedro Henrique de Siqueira Mancilha, Francisco Gil Coury |
| On-Site Speaker (Planned) |
Caroline Binde Stoco |
| Abstract Scope |
Magnetocaloric alloys represent a promising route toward environmentally friendly solid-state refrigeration, motivating the development of descriptors capable of guiding composition selection within the vast chemical space of high-entropy alloys (HEAs). In this study, we compile and analyze magnetocaloric data from the literature to investigate qualitative correlations between key MCE properties, such as the isothermal entropy change (ΔS) and the magnetic/structural transition temperatures (Tc/Tr), and fundamental electronic parameters, including the valence electron concentration (VEC) and the transition-metal–to–semiconductor ratio. Particular emphasis is placed on alloys undergoing first-order magnetostructural transformations of the Ni₂In-type P6₃/mmc (paramagnetic) to TiNiSi-type Pnma (ferromagnetic) structure, which are of primary interest for achieving large magnetocaloric effects. By mapping trends across general HEA compositions with both FOPT and SOPT behavior, we identify descriptors that may aid future screening strategies. These results provide an initial framework for rational exploration of HEA-based magnetocaloric materials, with long-term prospects toward room-temperature refrigeration. |
| Proceedings Inclusion? |
Undecided |