Article (Scientific journals)
Magnetic properties of Ga-doped lanthanum manganite with controlled oxygen stoichometry
Vertruyen, Bénédicte; Hebert, Sylvie; Maignan, Antoine et al.
2002In Crystal Engineering, 5, p. 299-306
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Keywords :
magnetic properties; metal oxides; perovskite
Abstract :
[en] Stoichiometric LaMnO3 is an insulator whose A-type antiferromagnetic structure at low temperature is mainly connected to the Jahn-Teller distortion of the MnO6 octahedra. The substitution of non magnetic d(10) Ga3+ ions on the manganese site disrupts the orbital and spin orderings of the manganese ions and has a strong influence on the physical properties. The antiferromagnetic order is progressively destroyed while the ferromagnetic component increases. At the same time, the distortion of the orthorhombic cell decreases and the high temperature structural Jahn-Teller transition disappears. Such studies on manganese site substitutions give insight into the physics of the Mn-O three-dimensional network, which is supposed to be the key feature in the CMR manganites. (C) 2003 Elsevier Science Ltd. All rights reserved.
Disciplines :
Physics
Chemistry
Author, co-author :
Vertruyen, Bénédicte  ;  Université de Liège - ULiège > Chimie inorganique structurale
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 properties of Ga-doped lanthanum manganite with controlled oxygen stoichometry
Publication date :
2002
Journal title :
Crystal Engineering
ISSN :
1463-0184
Publisher :
Pergamon-Elsevier Science Ltd, Oxford, United Kingdom
Volume :
5
Pages :
299-306
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 Crystal Engineering and may be found at http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VP2-47WD9V4-S&_user=532038&_coverDate=12%2F31%2F2002&_alid=842093518&_rdoc=13&_fmt=high&_orig=search&_cdi=6194&_sort=d&_docanchor=&view=c&_ct=13&_acct=C000026659&_version=1&_urlVersion=0&_userid=532038&md5=9da8bf13fe7a34334f265a01d3e2b324
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