Structural effects of Sc doping on the multiferroic TbMnO3

9 páginas, 8 figuras, 4 tablas.-- PACS number(s): 75.85.+t, 61.05.cp, 61.05.fm, 61.05.cj

Detalles Bibliográficos
Autores: Cuartero, Vera, Blasco, Javier, García, Joaquín, Subías, Gloria, Ritter, C., Rodríguez-Velamazán, J. A.
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/47652
Acceso en línea:http://hdl.handle.net/10261/47652
Access Level:acceso abierto
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spelling Structural effects of Sc doping on the multiferroic TbMnO3Cuartero, VeraBlasco, JavierGarcía, JoaquínSubías, GloriaRitter, C.Rodríguez-Velamazán, J. A.9 páginas, 8 figuras, 4 tablas.-- PACS number(s): 75.85.+t, 61.05.cp, 61.05.fm, 61.05.cjThe new TbMn1−xScxO3 series has been synthesized and the structural properties have been characterized by x-ray diffraction, neutron diffraction, and x-ray absorption spectroscopy. The whole series belongs to the family of ABO3 perovskites. All of the samples are isostructural to the parent compound TbMnO3, crystallizing in an orthorhombic cell with space-group Pbnm symmetry. The homovalent substitution of Mn3+ with the larger Sc3+ ion leads to an increase in both the unit-cell volume and the BO6 octahedra tilting. The analysis of neutron and x-ray diffraction patterns suggest a continuous evolution from a Jahn-Teller distorted BO6 octahedron in TbMnO3 into a nearly regular one in TbScO3. However, x-ray absorption measurements at the Mn K edge reveal that the local geometry around the Mn3+ cation remains distorted in the series even for high values of x. This result is in opposition to previous findings in similar compounds such as LaMn1−x(Ga/Sc)xO3 and suggests that the strong orthorhombic distortion of the unit cell due to the small Tb3+ cation size favors the stability of the distorted MnO6 octahedron in diluted systems. Long-range magnetic ordering is not found for x≥0.3 samples and there is not sign of ferromagnetism for x=0.5 in opposite to the behavior observed in the La-based compounds. Since Sc substitution induces a minor perturbation on the local structure of the Mn sublattice but magnetic ordering of both Mn and Tb sublattices disappear for a small degree of substitution, we conclude that the involved magnetic interactions should have a strong directional anisotropy and the Tb magnetic ordering strongly depends on the existence of a long-range coherent Mn ordering.Financially supported by the Spanish MICINN (Projects No. FIS08-03951 and No. MAT2007-61621) and DGA (Camrads).Peer reviewedAmerican Physical Society201220122010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/47652reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevB.81.224117info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/476522026-05-22T06:33:51Z
dc.title.none.fl_str_mv Structural effects of Sc doping on the multiferroic TbMnO3
title Structural effects of Sc doping on the multiferroic TbMnO3
spellingShingle Structural effects of Sc doping on the multiferroic TbMnO3
Cuartero, Vera
title_short Structural effects of Sc doping on the multiferroic TbMnO3
title_full Structural effects of Sc doping on the multiferroic TbMnO3
title_fullStr Structural effects of Sc doping on the multiferroic TbMnO3
title_full_unstemmed Structural effects of Sc doping on the multiferroic TbMnO3
title_sort Structural effects of Sc doping on the multiferroic TbMnO3
dc.creator.none.fl_str_mv Cuartero, Vera
Blasco, Javier
García, Joaquín
Subías, Gloria
Ritter, C.
Rodríguez-Velamazán, J. A.
author Cuartero, Vera
author_facet Cuartero, Vera
Blasco, Javier
García, Joaquín
Subías, Gloria
Ritter, C.
Rodríguez-Velamazán, J. A.
author_role author
author2 Blasco, Javier
García, Joaquín
Subías, Gloria
Ritter, C.
Rodríguez-Velamazán, J. A.
author2_role author
author
author
author
author
description 9 páginas, 8 figuras, 4 tablas.-- PACS number(s): 75.85.+t, 61.05.cp, 61.05.fm, 61.05.cj
publishDate 2010
dc.date.none.fl_str_mv 2010
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/47652
url http://hdl.handle.net/10261/47652
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1103/PhysRevB.81.224117
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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