Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite

Autores
Aphesteguy, Juan Carlos; Bercoff, Paula Gabriela; Jacobo, Silvia Elena
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, particles of NiFe1.95Gd0.05O4 were coated with polyaniline (PANI) during the in situ polymerization of aniline in aqueous solution. Different ferrite/aniline ratios were selected in order to study magnetic and conductivity properties with increasing fraction of PANI. In a previous work, the addition of Gd in the structure of nickel ferrites obtained from mixed Gd, Fe and Ni citrates has been investigated in order to explore the possibility of Gd for Fe substitution in the solids. The ferrite-PANI composites were characterized by X-ray diffraction (XRD) and infrared (IR) spectroscopy. The changes on the magnetic and conductive properties after polyaniline coating were investigated. The coercivity is almost unchanged, while the saturation magnetization drastically decreases. It was found that the conductivity at room temperature increases from 4×10-3 to 9.6×10-3 S/cm when ferrite content changed from none to 24.5 wt/wt%. The conductivity of all measured samples decreased with decreasing temperature, exhibiting typical semiconductor behavior.
Fil: Aphesteguy, Juan Carlos. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Química; 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. Departamento de Química; Argentina
Materia
COMPOSITES
FERRITES
MAGNETIC NANOPARTICLES
POLYANILINE
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:11336/132353
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline compositeAphesteguy, Juan CarlosBercoff, Paula GabrielaJacobo, Silvia ElenaCOMPOSITESFERRITESMAGNETIC NANOPARTICLESPOLYANILINEhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2In this work, particles of NiFe1.95Gd0.05O4 were coated with polyaniline (PANI) during the in situ polymerization of aniline in aqueous solution. Different ferrite/aniline ratios were selected in order to study magnetic and conductivity properties with increasing fraction of PANI. In a previous work, the addition of Gd in the structure of nickel ferrites obtained from mixed Gd, Fe and Ni citrates has been investigated in order to explore the possibility of Gd for Fe substitution in the solids. The ferrite-PANI composites were characterized by X-ray diffraction (XRD) and infrared (IR) spectroscopy. The changes on the magnetic and conductive properties after polyaniline coating were investigated. The coercivity is almost unchanged, while the saturation magnetization drastically decreases. It was found that the conductivity at room temperature increases from 4×10-3 to 9.6×10-3 S/cm when ferrite content changed from none to 24.5 wt/wt%. The conductivity of all measured samples decreased with decreasing temperature, exhibiting typical semiconductor behavior.Fil: Aphesteguy, Juan Carlos. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Química; 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. Departamento de Química; ArgentinaElsevier Science2007-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/132353Aphesteguy, Juan Carlos; Bercoff, Paula Gabriela; Jacobo, Silvia Elena; Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite; Elsevier Science; Physica B: Condensed Matter; 398; 2; 9-2007; 200-2030921-4526CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.physb.2007.04.018info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:54:59Zoai:ri.conicet.gov.ar:11336/132353instacron: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:34982025-09-03 09:54:59.551CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite
title Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite
spellingShingle Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite
Aphesteguy, Juan Carlos
COMPOSITES
FERRITES
MAGNETIC NANOPARTICLES
POLYANILINE
title_short Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite
title_full Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite
title_fullStr Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite
title_full_unstemmed Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite
title_sort Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite
dc.creator.none.fl_str_mv Aphesteguy, Juan Carlos
Bercoff, Paula Gabriela
Jacobo, Silvia Elena
author Aphesteguy, Juan Carlos
author_facet Aphesteguy, Juan Carlos
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
FERRITES
MAGNETIC NANOPARTICLES
POLYANILINE
topic COMPOSITES
FERRITES
MAGNETIC NANOPARTICLES
POLYANILINE
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this work, particles of NiFe1.95Gd0.05O4 were coated with polyaniline (PANI) during the in situ polymerization of aniline in aqueous solution. Different ferrite/aniline ratios were selected in order to study magnetic and conductivity properties with increasing fraction of PANI. In a previous work, the addition of Gd in the structure of nickel ferrites obtained from mixed Gd, Fe and Ni citrates has been investigated in order to explore the possibility of Gd for Fe substitution in the solids. The ferrite-PANI composites were characterized by X-ray diffraction (XRD) and infrared (IR) spectroscopy. The changes on the magnetic and conductive properties after polyaniline coating were investigated. The coercivity is almost unchanged, while the saturation magnetization drastically decreases. It was found that the conductivity at room temperature increases from 4×10-3 to 9.6×10-3 S/cm when ferrite content changed from none to 24.5 wt/wt%. The conductivity of all measured samples decreased with decreasing temperature, exhibiting typical semiconductor behavior.
Fil: Aphesteguy, Juan Carlos. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Química; 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. Departamento de Química; Argentina
description In this work, particles of NiFe1.95Gd0.05O4 were coated with polyaniline (PANI) during the in situ polymerization of aniline in aqueous solution. Different ferrite/aniline ratios were selected in order to study magnetic and conductivity properties with increasing fraction of PANI. In a previous work, the addition of Gd in the structure of nickel ferrites obtained from mixed Gd, Fe and Ni citrates has been investigated in order to explore the possibility of Gd for Fe substitution in the solids. The ferrite-PANI composites were characterized by X-ray diffraction (XRD) and infrared (IR) spectroscopy. The changes on the magnetic and conductive properties after polyaniline coating were investigated. The coercivity is almost unchanged, while the saturation magnetization drastically decreases. It was found that the conductivity at room temperature increases from 4×10-3 to 9.6×10-3 S/cm when ferrite content changed from none to 24.5 wt/wt%. The conductivity of all measured samples decreased with decreasing temperature, exhibiting typical semiconductor behavior.
publishDate 2007
dc.date.none.fl_str_mv 2007-09
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/11336/132353
Aphesteguy, Juan Carlos; Bercoff, Paula Gabriela; Jacobo, Silvia Elena; Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite; Elsevier Science; Physica B: Condensed Matter; 398; 2; 9-2007; 200-203
0921-4526
CONICET Digital
CONICET
url http://hdl.handle.net/11336/132353
identifier_str_mv Aphesteguy, Juan Carlos; Bercoff, Paula Gabriela; Jacobo, Silvia Elena; Preparation of magnetic and conductive Ni-Gd ferrite-polyaniline composite; Elsevier Science; Physica B: Condensed Matter; 398; 2; 9-2007; 200-203
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.2007.04.018
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
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 13.13397

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