Artículos de revistas
Structural and magnetic study of the MnAs magnetocaloric compound
Registro en:
Materials Research. ABM, ABC, ABPol, v. 9, n. 1, p. 111-114, 2006.
1516-1439
S1516-14392006000100021
10.1590/S1516-14392006000100021
Autor
Nascimento, Fabiana Cristina
Santos, Adenilson Oliveira dos
Campos, Ariana de
Gama, Sérgio
Cardoso, Lisandro Pavie
Institución
Resumen
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. 111 114