Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling

Autores
Pozo Lopez, Gabriela del Valle; Silvetti, Silvia Patricia de Guadalupe; Urreta, Silvia Elena; Carreras, Alejo Cristian
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Magnetic NiZnFe2O4/SiO2 nanocomposites are synthesized by ball-milling a mixture of crystalline  a-Fe2O3, NiO, ZnO and SiO2 powders. Crystallographic phases appearing during milling, their particle sizes and lattice parameters are determined from X-ray diffraction (XRD) measurements and the morphology of the as-milled powders observed by scanning electron microscopy (SEM). Room temperature hysteresis properties are characterized by vibrating sample magnetometry. The milling process, up to 260 h, promotes the progressive amorphization of the powders and the formation of different phases, such as NiZn-ferrite, a-Fe and Fe2SiO4. For milling times smaller than 80 h, the complete transformation of the precursor oxides into NiZn-ferrite is only achieved after annealing the as-milled powders for 1 h in air at 1273 K. This heat treatment favors the formation of NiZn-ferrite in detriment of the precursor oxides. On the other hand, annealing in air the powder milled 260 h, essentially amorphous, results in the formation of both hematite and NiZn-ferrite in the amorphous silica. When the powders milled for 260 h are heat treated in argon atmosphere, a biphase composite is obtained, with NiZn-ferrite crystallites of about 65nm dispersed in an amorphous silica matrix. This last powder presents the highest values of saturation magnetization (29.87Am2/kg) and coercivity (25.7 kA/m), being the latter two orders of magnitude larger than that of bulk NiZn-ferrite.
Fil: Pozo Lopez, Gabriela del Valle. 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: Silvetti, Silvia Patricia de Guadalupe. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. 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: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina
Fil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
Materia
NiZn ferrite/SiO2 nanocomposites
Ball milling
XRD
Magnetic properties
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:11336/275510
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/275510
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball millingPozo Lopez, Gabriela del ValleSilvetti, Silvia Patricia de GuadalupeUrreta, Silvia ElenaCarreras, Alejo CristianNiZn ferrite/SiO2 nanocompositesBall millingXRDMagnetic propertieshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Magnetic NiZnFe2O4/SiO2 nanocomposites are synthesized by ball-milling a mixture of crystalline  a-Fe2O3, NiO, ZnO and SiO2 powders. Crystallographic phases appearing during milling, their particle sizes and lattice parameters are determined from X-ray diffraction (XRD) measurements and the morphology of the as-milled powders observed by scanning electron microscopy (SEM). Room temperature hysteresis properties are characterized by vibrating sample magnetometry. The milling process, up to 260 h, promotes the progressive amorphization of the powders and the formation of different phases, such as NiZn-ferrite, a-Fe and Fe2SiO4. For milling times smaller than 80 h, the complete transformation of the precursor oxides into NiZn-ferrite is only achieved after annealing the as-milled powders for 1 h in air at 1273 K. This heat treatment favors the formation of NiZn-ferrite in detriment of the precursor oxides. On the other hand, annealing in air the powder milled 260 h, essentially amorphous, results in the formation of both hematite and NiZn-ferrite in the amorphous silica. When the powders milled for 260 h are heat treated in argon atmosphere, a biphase composite is obtained, with NiZn-ferrite crystallites of about 65nm dispersed in an amorphous silica matrix. This last powder presents the highest values of saturation magnetization (29.87Am2/kg) and coercivity (25.7 kA/m), being the latter two orders of magnitude larger than that of bulk NiZn-ferrite.Fil: Pozo Lopez, Gabriela del Valle. 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: Silvetti, Silvia Patricia de Guadalupe. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. 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: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; ArgentinaFil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; ArgentinaElsevier Science SA2010-09info: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/11336/275510Pozo Lopez, Gabriela del Valle; Silvetti, Silvia Patricia de Guadalupe; Urreta, Silvia Elena; Carreras, Alejo Cristian; Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling; Elsevier Science SA; Journal of Alloys and Compounds; 505; 2; 9-2010; 808-8130925-8388CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/journal/09258388/505/2info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2010.06.145info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-03T09:35:35Zoai:ri.conicet.gov.ar:11336/275510instacron: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:34982025-12-03 09:35:35.559CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling
title Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling
spellingShingle Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling
Pozo Lopez, Gabriela del Valle
NiZn ferrite/SiO2 nanocomposites
Ball milling
XRD
Magnetic properties
title_short Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling
title_full Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling
title_fullStr Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling
title_full_unstemmed Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling
title_sort Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling
dc.creator.none.fl_str_mv Pozo Lopez, Gabriela del Valle
Silvetti, Silvia Patricia de Guadalupe
Urreta, Silvia Elena
Carreras, Alejo Cristian
author Pozo Lopez, Gabriela del Valle
author_facet Pozo Lopez, Gabriela del Valle
Silvetti, Silvia Patricia de Guadalupe
Urreta, Silvia Elena
Carreras, Alejo Cristian
author_role author
author2 Silvetti, Silvia Patricia de Guadalupe
Urreta, Silvia Elena
Carreras, Alejo Cristian
author2_role author
author
author
dc.subject.none.fl_str_mv NiZn ferrite/SiO2 nanocomposites
Ball milling
XRD
Magnetic properties
topic NiZn ferrite/SiO2 nanocomposites
Ball milling
XRD
Magnetic properties
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Magnetic NiZnFe2O4/SiO2 nanocomposites are synthesized by ball-milling a mixture of crystalline  a-Fe2O3, NiO, ZnO and SiO2 powders. Crystallographic phases appearing during milling, their particle sizes and lattice parameters are determined from X-ray diffraction (XRD) measurements and the morphology of the as-milled powders observed by scanning electron microscopy (SEM). Room temperature hysteresis properties are characterized by vibrating sample magnetometry. The milling process, up to 260 h, promotes the progressive amorphization of the powders and the formation of different phases, such as NiZn-ferrite, a-Fe and Fe2SiO4. For milling times smaller than 80 h, the complete transformation of the precursor oxides into NiZn-ferrite is only achieved after annealing the as-milled powders for 1 h in air at 1273 K. This heat treatment favors the formation of NiZn-ferrite in detriment of the precursor oxides. On the other hand, annealing in air the powder milled 260 h, essentially amorphous, results in the formation of both hematite and NiZn-ferrite in the amorphous silica. When the powders milled for 260 h are heat treated in argon atmosphere, a biphase composite is obtained, with NiZn-ferrite crystallites of about 65nm dispersed in an amorphous silica matrix. This last powder presents the highest values of saturation magnetization (29.87Am2/kg) and coercivity (25.7 kA/m), being the latter two orders of magnitude larger than that of bulk NiZn-ferrite.
Fil: Pozo Lopez, Gabriela del Valle. 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: Silvetti, Silvia Patricia de Guadalupe. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. 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: Urreta, Silvia Elena. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina
Fil: Carreras, Alejo Cristian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina
description Magnetic NiZnFe2O4/SiO2 nanocomposites are synthesized by ball-milling a mixture of crystalline  a-Fe2O3, NiO, ZnO and SiO2 powders. Crystallographic phases appearing during milling, their particle sizes and lattice parameters are determined from X-ray diffraction (XRD) measurements and the morphology of the as-milled powders observed by scanning electron microscopy (SEM). Room temperature hysteresis properties are characterized by vibrating sample magnetometry. The milling process, up to 260 h, promotes the progressive amorphization of the powders and the formation of different phases, such as NiZn-ferrite, a-Fe and Fe2SiO4. For milling times smaller than 80 h, the complete transformation of the precursor oxides into NiZn-ferrite is only achieved after annealing the as-milled powders for 1 h in air at 1273 K. This heat treatment favors the formation of NiZn-ferrite in detriment of the precursor oxides. On the other hand, annealing in air the powder milled 260 h, essentially amorphous, results in the formation of both hematite and NiZn-ferrite in the amorphous silica. When the powders milled for 260 h are heat treated in argon atmosphere, a biphase composite is obtained, with NiZn-ferrite crystallites of about 65nm dispersed in an amorphous silica matrix. This last powder presents the highest values of saturation magnetization (29.87Am2/kg) and coercivity (25.7 kA/m), being the latter two orders of magnitude larger than that of bulk NiZn-ferrite.
publishDate 2010
dc.date.none.fl_str_mv 2010-09
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/11336/275510
Pozo Lopez, Gabriela del Valle; Silvetti, Silvia Patricia de Guadalupe; Urreta, Silvia Elena; Carreras, Alejo Cristian; Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling; Elsevier Science SA; Journal of Alloys and Compounds; 505; 2; 9-2010; 808-813
0925-8388
CONICET Digital
CONICET
url http://hdl.handle.net/11336/275510
identifier_str_mv Pozo Lopez, Gabriela del Valle; Silvetti, Silvia Patricia de Guadalupe; Urreta, Silvia Elena; Carreras, Alejo Cristian; Structure and magnetic properties of NiZn ferrite/SiO2 nanocomposites synthesized by ball milling; Elsevier Science SA; Journal of Alloys and Compounds; 505; 2; 9-2010; 808-813
0925-8388
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/journal/09258388/505/2
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2010.06.145
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 SA
publisher.none.fl_str_mv Elsevier Science SA
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 13.275514

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