Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties

Detalhes bibliográficos
Autor(a) principal: Mesquita, A. [UNESP]
Data de Publicação: 2015
Outros Autores: Rhodes, F. P., Da Silva, R. T., Neves, P. P., De Zevallos, A. O., Andreeta, M. R.B., De Lima, M. M., Cantarero, A., Da Silva, I. S., Boselli, M. A., Gratens, X., Chitta, V. A., Doriguetto, A. C., Ferraz, W. B., Sabioni, A. C.S., De Carvalho, H. B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jallcom.2015.03.004
http://hdl.handle.net/11449/227946
Resumo: Abstract Bulk Co-doped ZnO (Zn1-xCoxO) samples were prepared and studied with particular emphasis on their compositions, structures, and magnetic properties. A detailed microstructural analysis was conducted to investigate the nature of Co incorporation into the wurtzite ZnO matrix. The Zn1-xCoxO ceramic samples were prepared using the standard solid-state reaction method with different Co molar concentrations of up to 30%. A Co solubility limit of approximately 23% was determined. For samples with Co concentrations greater than 23%, a segregated phase identified as Zn-doped CoO (Co1-yZnyO with y = 0.23) was observed. The magnetic characterization for the single-phase samples revealed a paramagnetic behavior with antiferromagnetic coupling of Co2+ ions within the ZnO matrix. In order to get more insight about the magnetic results Monte Carlo simulations were conducted for different magnetic couplings and different Co distributions over the volume of the samples. We discussed the observed magnetic behavior of our samples by considering the main theories regarding the magnetic properties of dilute magnetic oxides. An inhomogeneous distribution of Co ions within the grains was inferred from the microstructural and magnetic characterization.
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spelling Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic propertiesCo distributionDilute magnetic oxideMagnetic propertiesPhase diagramSpintronicZn1-xCoxOAbstract Bulk Co-doped ZnO (Zn1-xCoxO) samples were prepared and studied with particular emphasis on their compositions, structures, and magnetic properties. A detailed microstructural analysis was conducted to investigate the nature of Co incorporation into the wurtzite ZnO matrix. The Zn1-xCoxO ceramic samples were prepared using the standard solid-state reaction method with different Co molar concentrations of up to 30%. A Co solubility limit of approximately 23% was determined. For samples with Co concentrations greater than 23%, a segregated phase identified as Zn-doped CoO (Co1-yZnyO with y = 0.23) was observed. The magnetic characterization for the single-phase samples revealed a paramagnetic behavior with antiferromagnetic coupling of Co2+ ions within the ZnO matrix. In order to get more insight about the magnetic results Monte Carlo simulations were conducted for different magnetic couplings and different Co distributions over the volume of the samples. We discussed the observed magnetic behavior of our samples by considering the main theories regarding the magnetic properties of dilute magnetic oxides. An inhomogeneous distribution of Co ions within the grains was inferred from the microstructural and magnetic characterization.Financiadora de Estudos e ProjetosConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Federal de AlfenasUniversidade Federal de Ouro PretoDepartamento de Engenharia de Materiais, Universidade Federal de São CarlosUniversity of Valencia, Materials Science InstituteUniversidade Federal de UberlândiaInstituto de Física, Universidade de São PauloCentro de Desenvolvimento de Tecnologia Nuclear/CNENDepartamento de Física, Instituto de Geociências e Ciências Exatas, Universidade Estadual PaulistaDepartamento de Física, Instituto de Geociências e Ciências Exatas, Universidade Estadual PaulistaFinanciadora de Estudos e Projetos: 134/08CNPq: 476870/2011-9Financiadora de Estudos e Projetos: MAT2012-33483CAPES: PNPD-2011Universidade Federal de AlfenasUniversidade Federal de Ouro PretoUniversidade Federal de São Carlos (UFSCar)University of Valencia, Materials Science InstituteUniversidade Federal de Uberlândia (UFU)Universidade de São Paulo (USP)Centro de Desenvolvimento de Tecnologia Nuclear/CNENUniversidade Estadual Paulista (UNESP)Mesquita, A. [UNESP]Rhodes, F. P.Da Silva, R. T.Neves, P. P.De Zevallos, A. O.Andreeta, M. R.B.De Lima, M. M.Cantarero, A.Da Silva, I. S.Boselli, M. A.Gratens, X.Chitta, V. A.Doriguetto, A. C.Ferraz, W. B.Sabioni, A. C.S.De Carvalho, H. B.2022-04-29T07:25:55Z2022-04-29T07:25:55Z2015-07-25info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article407-417http://dx.doi.org/10.1016/j.jallcom.2015.03.004Journal of Alloys and Compounds, v. 637, p. 407-417.0925-8388http://hdl.handle.net/11449/22794610.1016/j.jallcom.2015.03.0042-s2.0-84925003070Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Alloys and Compoundsinfo:eu-repo/semantics/openAccess2022-04-29T07:25:55Zoai:repositorio.unesp.br:11449/227946Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:13:00.709483Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties
title Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties
spellingShingle Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties
Mesquita, A. [UNESP]
Co distribution
Dilute magnetic oxide
Magnetic properties
Phase diagram
Spintronic
Zn1-xCoxO
title_short Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties
title_full Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties
title_fullStr Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties
title_full_unstemmed Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties
title_sort Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties
author Mesquita, A. [UNESP]
author_facet Mesquita, A. [UNESP]
Rhodes, F. P.
Da Silva, R. T.
Neves, P. P.
De Zevallos, A. O.
Andreeta, M. R.B.
De Lima, M. M.
Cantarero, A.
Da Silva, I. S.
Boselli, M. A.
Gratens, X.
Chitta, V. A.
Doriguetto, A. C.
Ferraz, W. B.
Sabioni, A. C.S.
De Carvalho, H. B.
author_role author
author2 Rhodes, F. P.
Da Silva, R. T.
Neves, P. P.
De Zevallos, A. O.
Andreeta, M. R.B.
De Lima, M. M.
Cantarero, A.
Da Silva, I. S.
Boselli, M. A.
Gratens, X.
Chitta, V. A.
Doriguetto, A. C.
Ferraz, W. B.
Sabioni, A. C.S.
De Carvalho, H. B.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de Alfenas
Universidade Federal de Ouro Preto
Universidade Federal de São Carlos (UFSCar)
University of Valencia, Materials Science Institute
Universidade Federal de Uberlândia (UFU)
Universidade de São Paulo (USP)
Centro de Desenvolvimento de Tecnologia Nuclear/CNEN
Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Mesquita, A. [UNESP]
Rhodes, F. P.
Da Silva, R. T.
Neves, P. P.
De Zevallos, A. O.
Andreeta, M. R.B.
De Lima, M. M.
Cantarero, A.
Da Silva, I. S.
Boselli, M. A.
Gratens, X.
Chitta, V. A.
Doriguetto, A. C.
Ferraz, W. B.
Sabioni, A. C.S.
De Carvalho, H. B.
dc.subject.por.fl_str_mv Co distribution
Dilute magnetic oxide
Magnetic properties
Phase diagram
Spintronic
Zn1-xCoxO
topic Co distribution
Dilute magnetic oxide
Magnetic properties
Phase diagram
Spintronic
Zn1-xCoxO
description Abstract Bulk Co-doped ZnO (Zn1-xCoxO) samples were prepared and studied with particular emphasis on their compositions, structures, and magnetic properties. A detailed microstructural analysis was conducted to investigate the nature of Co incorporation into the wurtzite ZnO matrix. The Zn1-xCoxO ceramic samples were prepared using the standard solid-state reaction method with different Co molar concentrations of up to 30%. A Co solubility limit of approximately 23% was determined. For samples with Co concentrations greater than 23%, a segregated phase identified as Zn-doped CoO (Co1-yZnyO with y = 0.23) was observed. The magnetic characterization for the single-phase samples revealed a paramagnetic behavior with antiferromagnetic coupling of Co2+ ions within the ZnO matrix. In order to get more insight about the magnetic results Monte Carlo simulations were conducted for different magnetic couplings and different Co distributions over the volume of the samples. We discussed the observed magnetic behavior of our samples by considering the main theories regarding the magnetic properties of dilute magnetic oxides. An inhomogeneous distribution of Co ions within the grains was inferred from the microstructural and magnetic characterization.
publishDate 2015
dc.date.none.fl_str_mv 2015-07-25
2022-04-29T07:25:55Z
2022-04-29T07:25:55Z
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://dx.doi.org/10.1016/j.jallcom.2015.03.004
Journal of Alloys and Compounds, v. 637, p. 407-417.
0925-8388
http://hdl.handle.net/11449/227946
10.1016/j.jallcom.2015.03.004
2-s2.0-84925003070
url http://dx.doi.org/10.1016/j.jallcom.2015.03.004
http://hdl.handle.net/11449/227946
identifier_str_mv Journal of Alloys and Compounds, v. 637, p. 407-417.
0925-8388
10.1016/j.jallcom.2015.03.004
2-s2.0-84925003070
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Alloys and Compounds
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 407-417
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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