%0 Journal Article
%T Structural and magnetic study of the MnAs magnetocaloric compound
%A Nascimento
%A Fabiana Cristina
%A Santos
%A Adenilson Oliveira dos
%A Campos
%A Ariana de
%A Gama
%A S¨Śrgio
%A Cardoso
%A Lisandro Pavie
%J Materials Research
%D 2006
%I ABM, ABC, ABPol, SBCC, SBCr, SBMM, SBPMat
%R 10.1590/S1516-14392006000100021
%X 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 (p63/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.
%K mnas intermetallic compound
%K magnetocaloric effect
%K structural phase transition.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-14392006000100021&lng=en&nrm=iso&tlng=en