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Type: Artigo de periódico
Title: Ambient pressure colossal magnetocaloric effect in Mn1-xCuxAs compounds
Author: Rocco, DL
de Campos, A
Carvalho, AMG
Caron, L
Coelho, AA
Gama, S
Gandra, FCG
dos Santos, AO
Cardoso, LP
von Ranke, PJ
de Oliveira, NA
Abstract: Magnetic refrigeration is a good alternative to gas compression technology due to higher efficiency and environmental concerns. Magnetocaloric materials must exhibit large adiabatic temperature variations and a large entropic effect. MnAs shows the colossal magnetocaloric effect under high pressures or with Fe doping. In this work the authors introduce a class of materials-Mn1-xCuxAs-revealing a peak colossal effect of -175 J/(K kg) for a 5 T field variation at 318 K and ambient pressure. (c) 2007 American Institute of Physics.
Country: EUA
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.2746074
Date Issue: 2007
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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