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Title: Material-based figure of merit for caloric materials

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.5004173· OSTI ID:1417991

Efficient use of reversible thermal effects in magnetocaloric, electrocaloric, and elastocaloric materials is a promising avenue that can lead to a substantially increased efficiency of refrigeration and heat pumping devices, most importantly those used in household and commercial cooling applications near ambient temperature. A proliferation in caloric materials research has resulted in a wide array of materials where only the isothermal change in entropy in response to a handful of different field strengths over a limited range of temperatures has been evaluated and reported. Given the abundance of such data, there is a clear need for a simple and reliable figure of merit enabling fast screening and down-selection to justify further detailed characterization of those materials systems that hold the greatest promise. Based on the analysis of several well-known materials that exhibit vastly different magnetocaloric effects, the Temperature averaged Entropy Change (TEC) is introduced as a suitable early indicator of the material’s utility for magnetocaloric cooling applications, and its adoption by the caloric community is recommended.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1417991
Alternate ID(s):
OSTI ID: 1417092
Report Number(s):
IS-J-9531; TRN: US1801225
Journal Information:
Journal of Applied Physics, Vol. 123, Issue 3; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 214 works
Citation information provided by
Web of Science

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Cited By (9)

Magnetothermal properties of iron-based amorphous alloys type of Fe 63.5 M 10 Si 13.5 B 9 Nb 3 Cu 1 (M = Cr, Mn, Fe, Co, Ni) journal November 2018
Orientation dependent cyclic stability of the elastocaloric effect in textured Ni-Mn-Ga alloys journal May 2018
Enhancement of the magnetic and magnetocaloric properties by Na substitution for Ca of La0.8Ca0.2MnO3 manganite prepared via the Pechini-type sol–gel process journal December 2019
Magnetism and magnetocaloric effect in TlCo 2− x Ni x S 2 (0 $\leqslant$ x $\leqslant$ 0.05) journal October 2019
Non-hysteretic first-order phase transition with large latent heat and giant low-field magnetocaloric effect journal July 2018
Structural, magnetic, and magnetocaloric properties of Fe 7 Se 8 single crystals journal October 2018
Making a Cool Choice: The Materials Library of Magnetic Refrigeration journal July 2019
Energy Applications of Magnetocaloric Materials journal March 2020
Magnetic properties, magnetocaloric effect and refrigeration performance in RE 60 Al 20 Ni 20 ( RE  = Tm, Er and Ho) amorphous ribbons journal January 2020

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