Magnetocaloric properties of the (La-Gd)Fe11.4Si1.6 metamagnetic compound |
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| Authors: | A.S. Demuner E.C. Passamani J.R. Proveti E. Favre-Nicolin |
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| Affiliation: | a Departamento de Física, Universidade Federal do Espírito Santo, Vitória, ES 29075-910, Brazil
b Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, Brazil |
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| Abstract: | The effect of the partial substitution of La by Gd atoms on the magnetic entropy change of the LaFe11.4Si1.6 metamagnetic compound was studied using Mössbauer spectroscopy and DC magnetization measurements. A considerable enhancement of the magnetic entropy change was observed in Gd-substituted compounds, while the Curie temperature slightly decreased with the increase of the Gd content. For the 20% Gd-substituted compound, a giant magnetic entropy change value of −16 J/kg K at 190 K was attained under a field varying from 0 to 2 T. |
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| Keywords: | Magnetocaloric effect Metamagnetism La-Fe alloys |
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