Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3

The magnetic and transport properties of the compound La0.7Sr0.3Mn1-xFexO3(0.1 ≤ x ≤ 0.4) have been studied by means of electrical resistivity, AC magnetic susceptibility, and DC magneti- zation. At low concentrations (x ≤ 0.1), the system displays essentially para-to-ferromagnetic transitions as th...

Descripción completa

Detalles Bibliográficos
Autores: Araújo, José Humberto de, Xavier Jr., M. M., Cabral, F. A. O., Dumelow, T., Coelho, A. A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2004
País:Brasil
Institución:Universidade Federal do Rio Grande do Norte (UFRN)
Repositorio:Repositório Institucional da UFRN
Idioma:inglés
OAI Identifier:oai:repositorio.ufrn.br:123456789/28982
Acceso en línea:https://repositorio.ufrn.br/jspui/handle/123456789/28982
Access Level:acceso abierto
Palabra clave:spin glass
manganite
rare earths
id BR_8a36a3419c9dbca136c27aeb5a45ecb2
oai_identifier_str oai:repositorio.ufrn.br:123456789/28982
network_acronym_str BR
network_name_str Brasil
repository_id_str
spelling Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3spin glassmanganiterare earthsThe magnetic and transport properties of the compound La0.7Sr0.3Mn1-xFexO3(0.1 ≤ x ≤ 0.4) have been studied by means of electrical resistivity, AC magnetic susceptibility, and DC magneti- zation. At low concentrations (x ≤ 0.1), the system displays essentially para-to-ferromagnetic transitions as the temperature is decreased, although a decrease in the magnetic moment has been observed in previous studies at temperatures a little below TC. This ferromagnetism is explained by double exchange theory in terms of the formation of Mn+3/Mn+4 ions pairs in the system. At concentrations in the range 0.1 < x ≤ 0.4 the system is more complex. Increased Fe doping not only weakens the ferromagnetic (FM) order and augments the resistivity of the samples, but also induces the appearance of a reentrant spin glass phase at low temperatures (T < 60 K). Irreversibil- ity of the magnetization measured with zero field cooling and with field cooling has been ob- served. In addition, the AC susceptibility peak position varies with frequency. All these effects are characteristic of spin glass behavior. The results have been interpreted based in an increase of frustration due to increasing competition between FM Mn+3/Mn+4 interactions and antiferromagnetic interactions between ions at the boundaries of Fe clusters.The magnetic and transport properties of the compound La0.7Sr0.3Mn1-xFexO3(0.1 ≤ x ≤ 0.4) have been studied by means of electrical resistivity, AC magnetic susceptibility, and DC magneti- zation. At low concentrations (x ≤ 0.1), the system displays essentially para-to-ferromagnetic transitions as the temperature is decreased, although a decrease in the magnetic moment has been observed in previous studies at temperatures a little below TC. This ferromagnetism is explained by double exchange theory in terms of the formation of Mn+3/Mn+4 ions pairs in the system. At concentrations in the range 0.1 < x ≤ 0.4 the system is more complex. Increased Fe doping not only weakens the ferromagnetic (FM) order and augments the resistivity of the samples, but also induces the appearance of a reentrant spin glass phase at low temperatures (T < 60 K). Irreversibil- ity of the magnetization measured with zero field cooling and with field cooling has been ob- served. In addition, the AC susceptibility peak position varies with frequency. All these effects are characteristic of spin glass behavior. The results have been interpreted based in an increase of frustration due to increasing competition between FM Mn+3/Mn+4 interactions and antiferromagnetic interactions between ions at the boundaries of Fe clusters.Materials Research2020-05-15T13:02:22Z2020-05-15T13:02:22Z2004info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfARAUJO, José Humberto de et al. Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-XFeXO 3. Materials Research, São Carlos, v. 7, n. 2, p. 355-357, 2004. ISSN 1980-5373. DOI https://doi.org/10.1590/S1516-14392004000200023. Disponivel em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000200023&lng=en&tlng=en. Acesso em: 15 maio 2020.1516-1439 (online), 1980-5373 (print)https://repositorio.ufrn.br/jspui/handle/123456789/2898210.1590/S1516-14392004000200023ark:/41046/001300001q5j3Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNAraújo, José Humberto deXavier Jr., M. M.Cabral, F. A. O.Dumelow, T.Coelho, A. A.2020-06-09T19:01:24Zoai:repositorio.ufrn.br:123456789/28982Repositório InstitucionalPUBhttp://repositorio.ufrn.br/oai/repositorio@bczm.ufrn.bropendoar:2020-06-09T19:01:24Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.none.fl_str_mv Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3
title Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3
spellingShingle Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3
Araújo, José Humberto de
spin glass
manganite
rare earths
title_short Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3
title_full Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3
title_fullStr Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3
title_full_unstemmed Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3
title_sort Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-X FeX O 3
dc.creator.none.fl_str_mv Araújo, José Humberto de
Xavier Jr., M. M.
Cabral, F. A. O.
Dumelow, T.
Coelho, A. A.
author Araújo, José Humberto de
author_facet Araújo, José Humberto de
Xavier Jr., M. M.
Cabral, F. A. O.
Dumelow, T.
Coelho, A. A.
author_role author
author2 Xavier Jr., M. M.
Cabral, F. A. O.
Dumelow, T.
Coelho, A. A.
author2_role author
author
author
author
dc.subject.por.fl_str_mv spin glass
manganite
rare earths
topic spin glass
manganite
rare earths
description The magnetic and transport properties of the compound La0.7Sr0.3Mn1-xFexO3(0.1 ≤ x ≤ 0.4) have been studied by means of electrical resistivity, AC magnetic susceptibility, and DC magneti- zation. At low concentrations (x ≤ 0.1), the system displays essentially para-to-ferromagnetic transitions as the temperature is decreased, although a decrease in the magnetic moment has been observed in previous studies at temperatures a little below TC. This ferromagnetism is explained by double exchange theory in terms of the formation of Mn+3/Mn+4 ions pairs in the system. At concentrations in the range 0.1 < x ≤ 0.4 the system is more complex. Increased Fe doping not only weakens the ferromagnetic (FM) order and augments the resistivity of the samples, but also induces the appearance of a reentrant spin glass phase at low temperatures (T < 60 K). Irreversibil- ity of the magnetization measured with zero field cooling and with field cooling has been ob- served. In addition, the AC susceptibility peak position varies with frequency. All these effects are characteristic of spin glass behavior. The results have been interpreted based in an increase of frustration due to increasing competition between FM Mn+3/Mn+4 interactions and antiferromagnetic interactions between ions at the boundaries of Fe clusters.
publishDate 2004
dc.date.none.fl_str_mv 2004
2020-05-15T13:02:22Z
2020-05-15T13:02:22Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv ARAUJO, José Humberto de et al. Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-XFeXO 3. Materials Research, São Carlos, v. 7, n. 2, p. 355-357, 2004. ISSN 1980-5373. DOI https://doi.org/10.1590/S1516-14392004000200023. Disponivel em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000200023&lng=en&tlng=en. Acesso em: 15 maio 2020.
1516-1439 (online), 1980-5373 (print)
https://repositorio.ufrn.br/jspui/handle/123456789/28982
10.1590/S1516-14392004000200023
dc.identifier.dark.fl_str_mv ark:/41046/001300001q5j3
identifier_str_mv ARAUJO, José Humberto de et al. Reentrant spin glass behavior in polycrystalline La0.7Sr0.3Mn1-XFeXO 3. Materials Research, São Carlos, v. 7, n. 2, p. 355-357, 2004. ISSN 1980-5373. DOI https://doi.org/10.1590/S1516-14392004000200023. Disponivel em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000200023&lng=en&tlng=en. Acesso em: 15 maio 2020.
1516-1439 (online), 1980-5373 (print)
10.1590/S1516-14392004000200023
ark:/41046/001300001q5j3
url https://repositorio.ufrn.br/jspui/handle/123456789/28982
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Brazil
http://creativecommons.org/licenses/by-nc-nd/3.0/br/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Materials Research
publisher.none.fl_str_mv Materials Research
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRN
instname:Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
instname_str Universidade Federal do Rio Grande do Norte (UFRN)
instacron_str UFRN
institution UFRN
reponame_str Repositório Institucional da UFRN
collection Repositório Institucional da UFRN
repository.name.fl_str_mv Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)
repository.mail.fl_str_mv repositorio@bczm.ufrn.br
_version_ 1853668161168080896
score 15,301603

Similares en LA Referencia