Details

Autor(en) / Beteiligte

• Neves Bez, Henrique
• Pathak, Arjun K.
• Biswas, Anis
• Zarkevich, Nikolai
• Balema, Viktor
• Mudryk, Yaroslav
• Johnson, Duane D.
• Pecharsky, Vitalij K.

Titel

Giant enhancement of the magnetocaloric response in Ni–Co–Mn–Ti by rapid solidification

Ist Teil von

• Acta materialia, 2019-07, Vol.173 (C), p.225-230

Ort / Verlag

United States: Elsevier Ltd

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. [Display omitted]