Materials Research | |
Structural and magnetic study of the MnAs magnetocaloric compound | |
Fabiana Cristina Nascimento1  Adenilson Oliveira Dos Santos1  Ariana De Campos1  Sérgio Gama1  Lisandro Pavie Cardoso1  | |
[1] ,Universidade Estadual de Campinas Instituto de Física Gleb Wataghin Campinas SP ,Brazil | |
关键词: MnAs intermetallic compound; magnetocaloric effect; structural phase transition; | |
DOI : 10.1590/S1516-14392006000100021 | |
来源: SciELO | |
【 摘 要 】
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.
【 授权许可】
CC BY
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