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Magneto-caloric effect in the pseudo-binary intermetallic YPrFe17 compound

Author:
Álvarez Alonso, PabloUniovi authority; Gorría Korres, PedroUniovi authority; Sánchez Llamazares, José LuisUniovi authority; Pérez Fernández, María JoséUniovi authority; Franco García, Victorino; Reiffers, Marian; Kováč, Jozef; Puente Orench, Inés; Blanco Rodríguez, Jesús ÁngelUniovi authority
Subject:

Intermetallic Compounds

Magnetic Materials

Crystal Structure

Thermomagnetic Effects

Publication date:
2011
Editorial:

Elsevier

Publisher version:
http://dx.doi.org/10.1016/j.matchemphys.2011.09.062
Citación:
Materials Chemistry and Physics, 131, p. 18-22(2011); doi:10.1016/j.matchemphys.2011.09.062
Descripción física:
p. 18-22
Abstract:

We have synthesized the intermetallic YPrFe17 compound by arc-melting. X-ray and neutron powder diffraction show that the crystal structure is rhombohedral with R¯3m space group (Th2Zn17-type). The investigated compound exhibits a broad isothermal magnetic entropy change SM(T) associated with the ferro-to-paramagnetic phase transition (TC ≈290 K). The | SM| (≈2.3Jkg−1 K−1) and the relative cooling power (≈100Jkg−1) have been calculated for applied magnetic field changes up to 1.5 T. A single master curve for SM under different values of the magnetic field change can be obtained by a rescaling of the temperature axis. The results are compared and discussed in terms of the magneto-caloric effect in the isostructural R2Fe17 (R = Y, Pr and Nd) binary intermetallic alloys.

We have synthesized the intermetallic YPrFe17 compound by arc-melting. X-ray and neutron powder diffraction show that the crystal structure is rhombohedral with R¯3m space group (Th2Zn17-type). The investigated compound exhibits a broad isothermal magnetic entropy change SM(T) associated with the ferro-to-paramagnetic phase transition (TC ≈290 K). The | SM| (≈2.3Jkg−1 K−1) and the relative cooling power (≈100Jkg−1) have been calculated for applied magnetic field changes up to 1.5 T. A single master curve for SM under different values of the magnetic field change can be obtained by a rescaling of the temperature axis. The results are compared and discussed in terms of the magneto-caloric effect in the isostructural R2Fe17 (R = Y, Pr and Nd) binary intermetallic alloys.

URI:
http://www.sciencedirect.com/science/article/pii/S0254058411008224
http://hdl.handle.net/10651/7734
ISSN:
0254-0584
DOI:
10.1016/j.matchemphys.2011.09.062
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