Campus Units

Materials Science and Engineering, Chemical and Biological Engineering, Physics and Astronomy, Ames Laboratory

Document Type


Publication Version

Accepted Manuscript

Publication Date


Journal or Book Title

Acta Materialia




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.


This is a manuscript of an article published as Bez, Henrique Neves, Arjun K. Pathak, Anis Biswas, Nikolai Zarkevich, Viktor Balema, Yaroslav Mudryk, Duane D. Johnson, and Vitalij K. Pecharsky. "Giant enhancement of the magnetocaloric response in Ni-Co-Mn-Ti by rapid solidification." Acta Materialia (2019). DOI: 10.1016/j.actamat.2019.05.004. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Acta Materialia Inc.



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Available for download on Sunday, May 09, 2021

Published Version