Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/242413
Type: Artigo
Title: The physical properties of Gd3Ru: a real candidate for a practical cryogenic refrigerator
Author: Monteiro, J. C. B.
Reis, R. D. dos
Gandra, F. G.
Abstract: The magnetization, the specific heat, and the magnetocaloric effect (MCE) for Gd3Ru are presented as function of temperature at different magnetic fields. The results show a maximum entropy change -Delta S = 30 J/kg K @ 5 T, which is the highest value for the R3M compounds. With a non-hysteretic transition of first order type at T-C = 54 K, it presents a temperature change Delta T-max = 5.7K around 59K with a refrigerating cooling power of 700 J/kg and these results are comparable to values found for giant MCE materials. This compound is stable and able to operate at temperatures between 90K and 40K with a minimum -Delta S = 5 J/kg K. These figures were obtained by sweeping the magnetic field without using sample preparation routines. This methodology is appropriate to evaluate the MCE for the cycling process of a cryogenic magnetic refrigerator. (C) 2015 AIP Publishing LLC.
The magnetization, the specific heat, and the magnetocaloric effect (MCE) for Gd3Ru are presented as function of temperature at different magnetic fields. The results show a maximum entropy change -Delta S = 30 J/kg K @ 5 T, which is the highest value for the R3M compounds. With a non-hysteretic transition of first order type at T-C = 54 K, it presents a temperature change Delta T-max = 5.7K around 59K with a refrigerating cooling power of 700 J/kg and these results are comparable to values found for giant MCE materials. This compound is stable and able to operate at temperatures between 90K and 40K with a minimum -Delta S = 5 J/kg K. These figures were obtained by sweeping the magnetic field without using sample preparation routines. This methodology is appropriate to evaluate the MCE for the cycling process of a cryogenic magnetic refrigerator.
Subject: Efeito magnetocalórico, Magnetização, Refrigeração magnética
Country: Estados Unidos
Editor: AIP Publishing
Citation: The Physical Properties Of Gd3ru: A Real Candidate For A Practical Cryogenic Refrigerator. Amer Inst Physics, v. 106, p. MAY-2015.
Rights: aberto
Identifier DOI: 10.1063/1.4921143
Address: https://aip.scitation.org/doi/10.1063/1.4921143
Date Issue: 2015
Appears in Collections:IFGW - Artigos e Outros Documentos

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