IIR document
Magnetocaloric properties of Y(1-x)R(x)Fe(2)[H,D](4.2) compounds (R= Gd, Tb, Er).
Author(s) : PAUL-BONCOUR V., MAZET T., PHEJAR M., et al.
Summary
The magnetocaloric properties of these compounds near the transition between a ferromagnetic (FM) and an antiferromagnetic (AFM) structure are presented. The R for Y substitution influences the transition temperature through a magnetovolumic effect, it decreases with Er content and increases with Tb and Gd. The magnetic entropy variation decreases significantly for R= Er and Tb with x= 0.5. The neutron diffraction studies show that for both compounds the relative AFM line intensities compared to the FM one is significantly lower than in Y(1-x)R(x)Fe(2)D(4.2) with smaller x content. This shows that the magnetic entropy variation strongly depends to the nature of the FM-AFM transition which is related to an itinerant electron metamagnetic behaviour.
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Details
- Original title: Magnetocaloric properties of Y(1-x)R(x)Fe(2)[H,D](4.2) compounds (R= Gd, Tb, Er).
- Record ID : 2011-0174
- Languages: English
- Source: 4th International Conference on Magnetic Refrigeration at Room Temperature (Thermag IV). Proceedings: Baotou, China, August 23-27, 2010.
- Publication date: 2010/08/23
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Indexing
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Themes:
Thermodynamic measurements;
Mass transfer;
Domestic applications (refrigerators, freezers);
Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling) - Keywords: Ferromagnetism; Composite; Magnetic refrigerator; Magnetocaloric cooling; Alloy; Magnetocaloric property; Magnetic property; Material; Gadolinium; Expérimentation
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