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Magnetocaloric effect in nano- and polycrystalline manganite La <inf>0.7</inf>Ca<inf>0.3</inf>MnO<inf>3</inf>
Authors
,
M Ausloos
+4 more
V Drozd
JF Fagnard
M Pȩkała
P Vanderbemden
Publication date
1 February 2008
Publisher
Abstract
La0.7Ca0.3MnO3 samples were prepared in nano- and polycrystalline forms by the sol-gel and solid state reaction methods, respectively, and structurally characterized by synchrotron X-ray diffraction. The magnetic properties determined by ac susceptibility and dc magnetization measurements are discussed. The magnetocaloric effect in this nanocrystalline manganite is spread over a broader temperature interval than in the polycrystalline case. The relative cooling power of the poly- and nanocrystalline manganites is used to evaluate a possible application for magnetic cooling below room temperature. © 2007 Springer-Verlag
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Last time updated on 15/07/2020