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.
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
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.
Available for download on Sunday, May 09, 2021