Article (Scientific journals)
Magnetic and electronic ground states of B-site-substituted LaMnO3: from antiferromagnetism to ferromagnetism
Vertruyen, Bénédicte; Flahaut, Delphine; Hebert, Sylvie et al.
2004In Journal of Magnetism and Magnetic Materials, 280 (1), p. 75-83
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Keywords :
manganites; magnetic structure; exchange interactions; AC susceptibility
Abstract :
[en] We report about the physical properties of samples obtained by different substitutions on the Mn site of LaMnO3: LaMn0.85Ni0.15O3, LaMn0.85Ga0.15O3 and LaMn0.5Ga0.5O3. It is well known that the antiferromagnetic orbitally ordered ground state of LaMnO3 is easily destroyed to give way to ferromagnetism. However, this ferromagnetic behaviour can result from several mechanisms: depending on the nature of the substituting cation and on the substitution level, the physical properties derived from a complex interplay between exchange interactions, orbital ordering and Jahn-Teller distortion. As a result, there are noticeable differences between the physical properties of the different samples, even though all three samples display a ferromagnetic component in zero applied magnetic field. In this paper we compare the crystallographic, electrical and magnetic properties of these samples, with a special attention for the AC susceptibility behaviour. (C) 2004 Elsevier B.V. All rights reserved.
Disciplines :
Physics
Materials science & engineering
Chemistry
Author, co-author :
Vertruyen, Bénédicte  ;  Université de Liège - ULiège > Chimie inorganique structurale
Flahaut, Delphine;  ISMRA, Caen > Laboratoire CRISMAT, UMR6508
Hebert, Sylvie;  ISMRA, Caen > Laboratoire CRISMAT, UMR6508
Maignan, Antoine;  ISMRA, Caen > Laboratoire CRISMAT, UMR6508
Martin, Christine;  ISMRA, Caen > Laboratoire CRISMAT, UMR6508
Hervieu, Maryvonne;  ISMRA, Caen > Laboratoire CRISMAT, UMR6508
Raveau, Bernard;  ISMRA, Caen > Laboratoire CRISMAT, UMR6508
Language :
English
Title :
Magnetic and electronic ground states of B-site-substituted LaMnO3: from antiferromagnetism to ferromagnetism
Publication date :
2004
Journal title :
Journal of Magnetism and Magnetic Materials
ISSN :
0304-8853
eISSN :
1873-4766
Publisher :
Elsevier Science Bv, Amsterdam, Netherlands
Volume :
280
Issue :
1
Pages :
75-83
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
UE - Union Européenne [BE]
Commentary :
The following article appeared in Journal of Magnetism and Magnetic Materials and may be found on the editor website http://www.sciencedirect.com/
Available on ORBi :
since 17 December 2008

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