Magnetic phenomena in co-containing layered double hydroxides

Detalhes bibliográficos
Autor(a) principal: Vieira, Daniel E. L.
Data de Publicação: 2017
Outros Autores: Salak, Andrei N., Fedorchenko, Alexey V., Pashkevich, Yurii G., Fertman, Elena L., Desnenko, Vladimir A., Babkin, Roman Yu., Čižmár, Erik, Feher, Alexander, Lopes, Augusto B., Ferreira, Mário G. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/25389
Resumo: Magnetic behavior of CoII(n)AlIII layered double hydroxides (LDHs) (n=Co/Al=2 and 3) intercalated with nitrate was studied as a function of temperature. Both LDH compounds are paramagnetic above about 8K. A rapid increase of their magnetic moments occurs below this temperature until the moments reach the maximum values at Tmax of 4.0K and 3.2K for Co(2)Al-NO3 and Co(3)Al-NO3, respectively. Below Tmax, the zero-field-cooled and the field-cooled static magnetization curves are strongly different. Along with this low-temperature phenomena, Co(2)Al-NO3 and Co(3)Al-NO3 demonstrate anomalous behavior of their temperature dependence magnetic susceptibility in a highertemperature range: between 75 and 175K, both the paramagnetic Curie temperature and the effective magnetic moment change in a non-monotonous way. Possible structural reasons of the observed magnetic behavior of the CoII(n)AlIII LDHs are discussed.
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spelling Magnetic phenomena in co-containing layered double hydroxidesLayered structureOxygen octahedraStatic magnetization,Effective magnetic momentMagnetic behavior of CoII(n)AlIII layered double hydroxides (LDHs) (n=Co/Al=2 and 3) intercalated with nitrate was studied as a function of temperature. Both LDH compounds are paramagnetic above about 8K. A rapid increase of their magnetic moments occurs below this temperature until the moments reach the maximum values at Tmax of 4.0K and 3.2K for Co(2)Al-NO3 and Co(3)Al-NO3, respectively. Below Tmax, the zero-field-cooled and the field-cooled static magnetization curves are strongly different. Along with this low-temperature phenomena, Co(2)Al-NO3 and Co(3)Al-NO3 demonstrate anomalous behavior of their temperature dependence magnetic susceptibility in a highertemperature range: between 75 and 175K, both the paramagnetic Curie temperature and the effective magnetic moment change in a non-monotonous way. Possible structural reasons of the observed magnetic behavior of the CoII(n)AlIII LDHs are discussed.AIP Publishing2018-08-02T00:00:00Z2017-08-01T00:00:00Z2017-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/25389eng1063-777X10.1063/1.5001299Vieira, Daniel E. L.Salak, Andrei N.Fedorchenko, Alexey V.Pashkevich, Yurii G.Fertman, Elena L.Desnenko, Vladimir A.Babkin, Roman Yu.Čižmár, ErikFeher, AlexanderLopes, Augusto B.Ferreira, Mário G. S.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-06T04:19:11Zoai:ria.ua.pt:10773/25389Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-06T04:19:11Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Magnetic phenomena in co-containing layered double hydroxides
title Magnetic phenomena in co-containing layered double hydroxides
spellingShingle Magnetic phenomena in co-containing layered double hydroxides
Vieira, Daniel E. L.
Layered structure
Oxygen octahedra
Static magnetization,
Effective magnetic moment
title_short Magnetic phenomena in co-containing layered double hydroxides
title_full Magnetic phenomena in co-containing layered double hydroxides
title_fullStr Magnetic phenomena in co-containing layered double hydroxides
title_full_unstemmed Magnetic phenomena in co-containing layered double hydroxides
title_sort Magnetic phenomena in co-containing layered double hydroxides
author Vieira, Daniel E. L.
author_facet Vieira, Daniel E. L.
Salak, Andrei N.
Fedorchenko, Alexey V.
Pashkevich, Yurii G.
Fertman, Elena L.
Desnenko, Vladimir A.
Babkin, Roman Yu.
Čižmár, Erik
Feher, Alexander
Lopes, Augusto B.
Ferreira, Mário G. S.
author_role author
author2 Salak, Andrei N.
Fedorchenko, Alexey V.
Pashkevich, Yurii G.
Fertman, Elena L.
Desnenko, Vladimir A.
Babkin, Roman Yu.
Čižmár, Erik
Feher, Alexander
Lopes, Augusto B.
Ferreira, Mário G. S.
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Vieira, Daniel E. L.
Salak, Andrei N.
Fedorchenko, Alexey V.
Pashkevich, Yurii G.
Fertman, Elena L.
Desnenko, Vladimir A.
Babkin, Roman Yu.
Čižmár, Erik
Feher, Alexander
Lopes, Augusto B.
Ferreira, Mário G. S.
dc.subject.por.fl_str_mv Layered structure
Oxygen octahedra
Static magnetization,
Effective magnetic moment
topic Layered structure
Oxygen octahedra
Static magnetization,
Effective magnetic moment
description Magnetic behavior of CoII(n)AlIII layered double hydroxides (LDHs) (n=Co/Al=2 and 3) intercalated with nitrate was studied as a function of temperature. Both LDH compounds are paramagnetic above about 8K. A rapid increase of their magnetic moments occurs below this temperature until the moments reach the maximum values at Tmax of 4.0K and 3.2K for Co(2)Al-NO3 and Co(3)Al-NO3, respectively. Below Tmax, the zero-field-cooled and the field-cooled static magnetization curves are strongly different. Along with this low-temperature phenomena, Co(2)Al-NO3 and Co(3)Al-NO3 demonstrate anomalous behavior of their temperature dependence magnetic susceptibility in a highertemperature range: between 75 and 175K, both the paramagnetic Curie temperature and the effective magnetic moment change in a non-monotonous way. Possible structural reasons of the observed magnetic behavior of the CoII(n)AlIII LDHs are discussed.
publishDate 2017
dc.date.none.fl_str_mv 2017-08-01T00:00:00Z
2017-08-01
2018-08-02T00:00:00Z
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 http://hdl.handle.net/10773/25389
url http://hdl.handle.net/10773/25389
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1063-777X
10.1063/1.5001299
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv AIP Publishing
publisher.none.fl_str_mv AIP Publishing
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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