Chemical and Biological Engineering, Materials Science and Engineering, Physics and Astronomy, Ames Laboratory
Journal or Book Title
Magnetocaloric refrigeration is a solid-state cooling approach that promises high energy efficiency and low environmental impact. It remains uncompetitive with conventional vapor-compression technologies due to lack of high-performing materials that exhibit large magnetocaloric effects in low magnetic fields. Here we report a game-changing enhancement of the magnetocaloric response in a transition-metal-based Ni-Co-Mn-Ti. Mechanically and chemically stable rapidly solidified ribbons exhibit magnetic entropy changes as high as ~27 J⋅kg-1K-1 for a moderate field change of 2 T, comparable to or larger than the best known materials for near-room temperature applications. The ribbons can be easily manufactured in large quantities and the transition temperature can be adjusted by varying Co concentration.
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Acta Materialia Inc.
Neves Bez, Henrique; Pathak, Arjun K.; Biswas, Anis; Zarkevich, Nikolai A.; Balema, Viktor; Mudryk, Yaroslav; Johnson, Duane D.; and Pecharsky, Vitalij K., "Giant enhancement of the magnetocaloric response in Ni-Co-Mn-Ti by rapid solidification" (2019). Materials Science and Engineering Publications. 332.