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Type: Artigo de periódico
Title: Structural and magnetic study of the MnAs magnetocaloric compound
Author: Nascimento, Fabiana Cristina
Santos, Adenilson Oliveira dos
Campos, Ariana de
Gama, Sérgio
Cardoso, Lisandro Pavie
Abstract: The temperature induced phase transition in MnAs is analyzed in this work using X ray Rietveld refinement. The results show the presence of the hexagonal phase (P6(3)/mmc) at room temperature and the first-order structural-magnetic transition to the orthorhombic phase (Pnma) around 318 K was followed in detail. The MnAs magnetic characterization allowed to obtain the transition temperature and a maximum value of 47 J/(kg.K) for the measured magnetocaloric effect for a magnetic field variation of 5 T.
Subject: MnAs intermetallic compound
magnetocaloric effect
structural phase transition
Editor: ABM, ABC, ABPol
Rights: aberto
Identifier DOI: 10.1590/S1516-14392006000100021
Date Issue: 1-Mar-2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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