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Magnetocaloric Effect in Nanostructured Pr(2)Fe(17) and Nd(2)Fe(17) Synthesized by High-Energy Ball-Milling

dc.contributor.authorÁlvarez Alonso, Pablo 
dc.contributor.authorSánchez Marcos, Jorge
dc.contributor.authorSánchez Llamazares, José Luis 
dc.contributor.authorFranco García, Victorino
dc.contributor.authorReiffers, Marian
dc.contributor.authorBlanco Rodríguez, Jesús Ángel 
dc.contributor.authorGorría Korres, Pedro
dc.identifier.citationActa Physica Polonica A, 118(5), p. 867-869 (2010)spa
dc.description.abstractNanocrystalline 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.eng
dc.format.extentp. 867-869spa
dc.publisherPolish Academy of Sciences. Institute of Physics
dc.relation.ispartofActa Physica Polonica. Aspa
dc.rights(c) Acta Physica Polonica A
dc.titleMagnetocaloric Effect in Nanostructured Pr(2)Fe(17) and Nd(2)Fe(17) Synthesized by High-Energy Ball-Millingspa

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