ORBi: Pekala M - Magnetocaloric and transport study of poly- and nanocrystalline composite manganites La0.7Ca0.3MnO3/La0.8Sr0.2MnO3

Reference : Magnetocaloric and transport study of poly- and nanocrystalline composite manganites La0...


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Electrical & electronics engineering Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/2268/129246

Title :	Magnetocaloric and transport study of poly- and nanocrystalline composite manganites La0.7Ca0.3MnO3/La0.8Sr0.2MnO3
Language :	English
Author, co-author :	Pekala, M [University of Warsaw > > > >]
	Pekala, K [Warsaw Technical University > > > >]
	Drozd, V [Florida International University, Miami, USA > Center for the Study Matter at Extreme Conditions > > >]
	Staszkiewicz, K [University of Warsaw > > > >]
	Fagnard, Jean-François [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques >]
	Vanderbemden, Philippe [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Capteurs et systèmes de mesures électriques >]
Publication date :	2012
Journal title :	Journal of Applied Physics
Publisher :	American Institute of Physics
Volume :	112
Pages :	023906
Audience :	International
ISSN :	0021-8979
City :	Melville
Country :	NY
Keywords :	[en] magnetocaloric effect ; manganites ; magnetic measurements
Abstract :	[en] Magnetocaloric and transport properties are reported for novel poly- and nanocrystalline double composite manganites, La0.8Sr0.2MnO3/La0.7Ca0.3MnO3, prepared by the sol-gel method. Magnetic field dependence of magnetic entropy change is found to be stronger for the nano- than the polycrystalline composite. The remarkable broadening of the temperature interval, where the magnetocaloric effect occurs in poly- and nanocrystalline composites, causes the relative cooling power (RCP(S)) of the nanocrystalline composite to be reduced by only 10% compared to the Sr based polycrystalline phase. The RCP(S) of the polycrystalline composite becomes remarkably enhanced. The low temperature magnetoresistance is enhanced by 5% for the nanostructured composite. © 2012 American Institute of Physics
Research units :	Services Universitaires Pour la Recherche et les Applications Technologiques de Matériaux Électro-Céramiques, Composites, Supraconducteurs - SUPRATECS
Funders :	WBI - Wallonie Bruxelles International
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/129246
DOI :	10.1063/1.4739262
Other URL :	http://jap.aip.org/resource/1/japiau/v112/i2/p023906_s1
Mentions required by the publisher for OA :	Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 112, 023906 (2012) and may be found at http://jap.aip.org/resource/1/japiau/v112/i2/p023906_s1.

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