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Repositorio de la Universidad de Oviedo. > Producción Bibliográfica de UniOvi: RECOPILA > Artículos >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/8157

Title: Magnetocaloric Effect in Nanostructured Pr(2)Fe(17) and Nd(2)Fe(17) Synthesized by High-Energy Ball-Milling
Author(s): Álvarez Alonso, Pablo
Sánchez Marcos, Jorge
Sánchez Llamazares, José Luis
Franco García, Victorino
Reiffers, Marian
Blanco Rodríguez, Jesús Ángel
Gorría Korres, Pedro
Issue date: 2010
Publisher: Polish Academy of Sciences. Institute of Physics
Citation: Acta Physica Polonica A, 118(5), p. 867-869 (2010)
Format extent: p. 867-869
Abstract: Nanocrystalline Pr2Fe17 and Nd2Fe17 powders with rhombohedral Th2Zn17-type crystal structure and average particle sizes around 20 nm have been obtained by high-energy ball milling. While the bulk alloys show a well-defined and sharp drop in the low-field magnetization curve at the Curie temperature, TC = 285 K (Pr) and 335 K (Nd), the ball-milled samples exhibit a substantial broadening of the ferro-to-paramagnetic transition due to a considerable augmentation of the disordered inter-grain boundaries. The latter results in an increase of more than 25% in the values of the full width at half maximum of the temperature dependence of the magnetic entropy change maintaining almost unchanged the relative cooling power.
URI: http://przyrbwn.icm.edu.pl/APP/PDF/118/a118z5p062.pdf
http://hdl.handle.net/10651/8157
ISSN: 0587-4246
Local identifier: 20101289
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