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Enhanced refrigerant capacity and magnetic entropy flattening using a two-amorphous FeZrB(Cu) composite

Author:
Álvarez Alonso, PabloUniovi authority; Sánchez Llamazares, José LuisUniovi authority; Gorría Korres, PedroUniovi authority; Blanco Rodríguez, Jesús ÁngelUniovi authority
Subject:

Ciencia de Los Materiales

Publication date:
2011
Editorial:

Institute of Physic (IOP Publishing)

Publisher version:
http://dx.doi.org/10.1063/1.3665941
Citación:
Applied Physics Letter, 99(23), 232501 (2011); doi:10.1063/1.3665941
Abstract:

The temperature dependence of the isothermal magnetic entropy change, {Delta}SM, and the magnetic field dependence of the refrigerant capacity, RC, have been investigated in a composite system xA+(1-x)B, based on Fe87Zr6B6Cu1 (A) and Fe90Zr8B2 (B) amorphous ribbons. Under a magnetic field change of 2 T the maximum improvement of the full-width at half maximum of {Delta}SM(T) curve (47 and 29 %) and the RC (18 and 23 %), in comparison with those of the individual alloys (A and B), is observed for x approx 0.5. Moreover, a flattening over 80 K in the {Delta}SM(T) curve around room temperature range is observed, which is a key feature for an Ericsson magnetic refrigeration cycle.

The temperature dependence of the isothermal magnetic entropy change, {Delta}SM, and the magnetic field dependence of the refrigerant capacity, RC, have been investigated in a composite system xA+(1-x)B, based on Fe87Zr6B6Cu1 (A) and Fe90Zr8B2 (B) amorphous ribbons. Under a magnetic field change of 2 T the maximum improvement of the full-width at half maximum of {Delta}SM(T) curve (47 and 29 %) and the RC (18 and 23 %), in comparison with those of the individual alloys (A and B), is observed for x approx 0.5. Moreover, a flattening over 80 K in the {Delta}SM(T) curve around room temperature range is observed, which is a key feature for an Ericsson magnetic refrigeration cycle.

URI:
http://hdl.handle.net/10651/9774
ISSN:
0003-6951; 1077-3118
DOI:
10.1063/1.3665941
Patrocinado por:

This work was funded by Spanish MICINN and FEDER program for financial support under MAT2008-06542-C04-03 research project. J.L.S.L. acknowledges the support received from Conacyt, Mexico, under the Project No. 156932

Id. Proyecto:

MICINN/MAT2008-06542-C04-03

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