Título
Adiabatic magnetocaloric effect in Ni50Mn35In15 ribbons
Autor
Pablo Álvarez-Alonso
CHRISTIAN OMAR AGUILAR ORTIZ
JUAN PABLO RAMON CAMARILLO GARCIA
Daniel Salazar Jaramillo
HORACIO FLORES ZUÑIGA
Volodymyr Chernenko
Nivel de Acceso
Acceso Abierto
Identificador alterno
doi: https://doi.org/10.1063/1.4968592
Resumen o descripción
"Heusler-type Ni-Mn-based metamagnetic shape memory alloys (MetaMSMAs) are promising candidates for magnetic refrigeration. To increase heat exchange rate and efficiency of cooling, the material should have a high surface/volume ratio. In this work, the typical Ni50Mn35In15 MetaMSMA was selected to fabricate thin ribbons by melt-spinning. The characteristic transformations of the ribbons were determined by calorimetry, X-ray diffraction, scanning electron microscopy and thermomagnetization measurements. The inverse and conventional magnetocaloric effects (MCEs) associated with the martensitic transformation (MT) and the ferromagnetic transition of the austenite (TCA), respectively, were measured directly by the adiabatic method (Delta T-ad) and indirectly by estimating the magnetic entropy change from magnetization measurements. It is found that the ribbons exhibit large values of Delta T-ad = -1.1K at mu(0)Delta H = 1.9 T, in the vicinity of the MT temperature of 300K for inverse MCE, and Delta T-ad = 2.3K for conventional MCE at TCA = 309 K. This result strongly motivates further development of different MetaMSMA refrigerants shaped as ribbons. Published by AIP Publishing."
Editor
American Institute of Physics
Fecha de publicación
noviembre de 2016
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Sugerencia de citación
P. Álvarez-Alonso, C. O. Aguilar-Ortiz, J. P. Camarillo, D. Salazar, H. Flores-Zúñiga, and V. A. Chernenko. (2016). Adiabatic magnetocaloric effect in Ni50Mn35In15 ribbons. Applied Physics Letters, 109, 212402. ©2016 American Institute of Physics
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Repositorio IPICYT
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