ORBi: Vertruyen Bénédicte - Electrical transport and magnetic properties of Mn3O4-La0.7Ca0.3MnO3 ceramic composites prepared by a one-step spray-drying technique

Reference : Electrical transport and magnetic properties of Mn3O4-La0.7Ca0.3MnO3 ceramic composites ...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Chemistry Engineering, computing & technology : Materials science & engineering
	To cite this reference:	http://hdl.handle.net/2268/13506

Title :	Electrical transport and magnetic properties of Mn3O4-La0.7Ca0.3MnO3 ceramic composites prepared by a one-step spray-drying technique
Language :	English
Author, co-author :	Vertruyen, Bénédicte [Université de Liège - ULg > > Chimie inorganique structurale >]
	Fagnard, Jean-François [Université de Liège - ULg > Dép. d'électric.]
	Vanderbemden, Philippe [Université de Liège - ULg > > Capteurs et systèmes de mesures électriques >]
	Ausloos, Marcel [Université de Liège - ULg > Département de physique > Physique statistique appliquée et des matériaux >]
	Rulmont, André [Université de Liège - ULg > > Chimie inorganique structurale >]
	Cloots, Rudi [Université de Liège - ULg > > Chimie inorganique structurale >]
Publication date :	2007
Journal title :	Journal of the European Ceramic Society
Publisher :	Elsevier Sci Ltd
Volume :	27
Issue/season :	13-15
Pages :	3923-3926
Audience :	International
ISSN :	0955-2219
City :	Oxford
Keywords :	[en] composites ; perovskites ; spray drying ; electrical properties
Abstract :	[en] La0.7Ca0.3MnO3/Mn3O4 composites can be synthesized in one step by thermal treatment of a spray-dried precursor, instead of mixing pre-synthesized powders. Another advantage of this composite system is that a long sintering step can be used without leading to significant modification of the manganite composition. The percolation threshold is reached at ~ 20 vol% of manganite phase. The 77 K low field magnetoresistance is enhanced to ~ 11 % at 0.15 T when the composition is close to the percolation threshold. (c) 2007 Elsevier Ltd. All rights reserved.
Research units :	Services Universitaires Pour la Recherche et les Applications Technologiques de Matériaux Électro-Céramiques, Composites, Supraconducteurs - SUPRATECS
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Union Européenne = European Union - UE = EU
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/13506
DOI :	10.1016/j.jeurceramsoc.2007.02.061
Other URL :	http://www.elsevier.com/wps/find/journaldescription.cws_home/405935/description#description

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