Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow

Autores
Herme, Carlos Alberto; Bercoff, Paula Gabriela; Jacobo, Silvia Elena
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Co-Nd strontium hexaferrite nanoparticles synthesized by the self-combustion method were treated in a hydrogen flow at different temperatures and times. The samples were characterized structurally by scanning electron microscopy and X-ray diffraction and magnetically with a vibrating sample magnetometer. Phase identification showed decomposition of the hexaferrite structure into Fe 3O 4 and different strontium mixed oxides. The sample treated at 500 °C for 30 minutes shows good magnetic properties due to the formation of a magnetite/hexaferrite composite. In this case magnetization is very close to the original sample while the coercivity slightly diminishes. The hexagonal phase is almost completely transformed into different oxides at a reducing temperature of 500 °C for 120 minutes. The obtained results are analyzed in terms of the phase composition and of the magnetic susceptibility of the studied samples.
Fil: Herme, Carlos Alberto. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
Fil: Bercoff, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Jacobo, Silvia Elena. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
COMPOSITES
MAGNETIC NANOPARTICLES
STRONTIUM HEXAFERRITE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/190837
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flowHerme, Carlos AlbertoBercoff, Paula GabrielaJacobo, Silvia ElenaCOMPOSITESMAGNETIC NANOPARTICLESSTRONTIUM HEXAFERRITEhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Co-Nd strontium hexaferrite nanoparticles synthesized by the self-combustion method were treated in a hydrogen flow at different temperatures and times. The samples were characterized structurally by scanning electron microscopy and X-ray diffraction and magnetically with a vibrating sample magnetometer. Phase identification showed decomposition of the hexaferrite structure into Fe 3O 4 and different strontium mixed oxides. The sample treated at 500 °C for 30 minutes shows good magnetic properties due to the formation of a magnetite/hexaferrite composite. In this case magnetization is very close to the original sample while the coercivity slightly diminishes. The hexagonal phase is almost completely transformed into different oxides at a reducing temperature of 500 °C for 120 minutes. The obtained results are analyzed in terms of the phase composition and of the magnetic susceptibility of the studied samples.Fil: Herme, Carlos Alberto. Universidad de Buenos Aires. Facultad de Ingeniería; ArgentinaFil: Bercoff, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Jacobo, Silvia Elena. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2012-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/190837Herme, Carlos Alberto; Bercoff, Paula Gabriela; Jacobo, Silvia Elena; Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow; Elsevier Science; Physica B: Condensed Matter; 407; 16; 8-2012; 3102-31050921-4526CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.physb.2011.12.036info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0921452611012294info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:20:20Zoai:ri.conicet.gov.ar:11336/190837instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:20:20.328CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow
title Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow
spellingShingle Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow
Herme, Carlos Alberto
COMPOSITES
MAGNETIC NANOPARTICLES
STRONTIUM HEXAFERRITE
title_short Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow
title_full Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow
title_fullStr Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow
title_full_unstemmed Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow
title_sort Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow
dc.creator.none.fl_str_mv Herme, Carlos Alberto
Bercoff, Paula Gabriela
Jacobo, Silvia Elena
author Herme, Carlos Alberto
author_facet Herme, Carlos Alberto
Bercoff, Paula Gabriela
Jacobo, Silvia Elena
author_role author
author2 Bercoff, Paula Gabriela
Jacobo, Silvia Elena
author2_role author
author
dc.subject.none.fl_str_mv COMPOSITES
MAGNETIC NANOPARTICLES
STRONTIUM HEXAFERRITE
topic COMPOSITES
MAGNETIC NANOPARTICLES
STRONTIUM HEXAFERRITE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Co-Nd strontium hexaferrite nanoparticles synthesized by the self-combustion method were treated in a hydrogen flow at different temperatures and times. The samples were characterized structurally by scanning electron microscopy and X-ray diffraction and magnetically with a vibrating sample magnetometer. Phase identification showed decomposition of the hexaferrite structure into Fe 3O 4 and different strontium mixed oxides. The sample treated at 500 °C for 30 minutes shows good magnetic properties due to the formation of a magnetite/hexaferrite composite. In this case magnetization is very close to the original sample while the coercivity slightly diminishes. The hexagonal phase is almost completely transformed into different oxides at a reducing temperature of 500 °C for 120 minutes. The obtained results are analyzed in terms of the phase composition and of the magnetic susceptibility of the studied samples.
Fil: Herme, Carlos Alberto. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina
Fil: Bercoff, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Jacobo, Silvia Elena. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Co-Nd strontium hexaferrite nanoparticles synthesized by the self-combustion method were treated in a hydrogen flow at different temperatures and times. The samples were characterized structurally by scanning electron microscopy and X-ray diffraction and magnetically with a vibrating sample magnetometer. Phase identification showed decomposition of the hexaferrite structure into Fe 3O 4 and different strontium mixed oxides. The sample treated at 500 °C for 30 minutes shows good magnetic properties due to the formation of a magnetite/hexaferrite composite. In this case magnetization is very close to the original sample while the coercivity slightly diminishes. The hexagonal phase is almost completely transformed into different oxides at a reducing temperature of 500 °C for 120 minutes. The obtained results are analyzed in terms of the phase composition and of the magnetic susceptibility of the studied samples.
publishDate 2012
dc.date.none.fl_str_mv 2012-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/190837
Herme, Carlos Alberto; Bercoff, Paula Gabriela; Jacobo, Silvia Elena; Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow; Elsevier Science; Physica B: Condensed Matter; 407; 16; 8-2012; 3102-3105
0921-4526
CONICET Digital
CONICET
url http://hdl.handle.net/11336/190837
identifier_str_mv Herme, Carlos Alberto; Bercoff, Paula Gabriela; Jacobo, Silvia Elena; Formation of a magnetic composite by reduction of Co-Nd doped strontium hexaferrite in a hydrogen gas flow; Elsevier Science; Physica B: Condensed Matter; 407; 16; 8-2012; 3102-3105
0921-4526
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physb.2011.12.036
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0921452611012294
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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