Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method

Autores
Sanchez, Rodolfo Daniel; Rivas, J.; Vaqueiro, P.; López Quintela, M. A.; Caeiro, D.
Año de publicación
2002
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present detailed measurements of field - and temperature - dependence of magnetization in nanocrystalline YIG (Y3Fe5O12) particles. The fine powders were prepared using sol-gel method. Samples with particle sizes ranging from 45 to 450 nm were obtained. We observe that the saturation magnetization decreases as the particle size is reduced due to enhancement of the surface spin effects. Below a critical diameter Ds ≅ 190 nm, the particles become single domains and the coercive forces reaches a maximum at diameters close to the critical value. As the particle size decreases the coercivity diminishes and at Dp ≃ 35 nm diameters the upper limit of superparamagnetic behavior is reached. A quantitative comparison of temperature and particle size dependence of coercivity shows a satisfactory agreement that is expected for an assembly of randomly oriented particles.
Fil: Sanchez, Rodolfo Daniel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rivas, J.. Universidad de Santiago de Compostela; España
Fil: Vaqueiro, P.. Heriot-watt University; Reino Unido
Fil: López Quintela, M. A.. Universidad de Santiago de Compostela; España
Fil: Caeiro, D.. Universidad de Santiago de Compostela; España
Materia
Magnetic Properties
Small Particles
Yttrium Iron Garnet
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:11336/68575
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/68575
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel methodSanchez, Rodolfo DanielRivas, J.Vaqueiro, P.López Quintela, M. A.Caeiro, D.Magnetic PropertiesSmall ParticlesYttrium Iron Garnethttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present detailed measurements of field - and temperature - dependence of magnetization in nanocrystalline YIG (Y3Fe5O12) particles. The fine powders were prepared using sol-gel method. Samples with particle sizes ranging from 45 to 450 nm were obtained. We observe that the saturation magnetization decreases as the particle size is reduced due to enhancement of the surface spin effects. Below a critical diameter Ds ≅ 190 nm, the particles become single domains and the coercive forces reaches a maximum at diameters close to the critical value. As the particle size decreases the coercivity diminishes and at Dp ≃ 35 nm diameters the upper limit of superparamagnetic behavior is reached. A quantitative comparison of temperature and particle size dependence of coercivity shows a satisfactory agreement that is expected for an assembly of randomly oriented particles.Fil: Sanchez, Rodolfo Daniel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Rivas, J.. Universidad de Santiago de Compostela; EspañaFil: Vaqueiro, P.. Heriot-watt University; Reino UnidoFil: López Quintela, M. A.. Universidad de Santiago de Compostela; EspañaFil: Caeiro, D.. Universidad de Santiago de Compostela; EspañaElsevier Science2002-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68575Sanchez, Rodolfo Daniel; Rivas, J.; Vaqueiro, P.; López Quintela, M. A.; Caeiro, D.; Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method; Elsevier Science; Journal of Magnetism and Magnetic Materials; 247; 1; 5-2002; 92-980304-8853CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0304885302001701info:eu-repo/semantics/altIdentifier/doi/10.1016/S0304-8853(02)00170-1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:01Zoai:ri.conicet.gov.ar:11336/68575instacron: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:34982025-09-29 09:43:01.584CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method
title Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method
spellingShingle Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method
Sanchez, Rodolfo Daniel
Magnetic Properties
Small Particles
Yttrium Iron Garnet
title_short Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method
title_full Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method
title_fullStr Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method
title_full_unstemmed Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method
title_sort Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method
dc.creator.none.fl_str_mv Sanchez, Rodolfo Daniel
Rivas, J.
Vaqueiro, P.
López Quintela, M. A.
Caeiro, D.
author Sanchez, Rodolfo Daniel
author_facet Sanchez, Rodolfo Daniel
Rivas, J.
Vaqueiro, P.
López Quintela, M. A.
Caeiro, D.
author_role author
author2 Rivas, J.
Vaqueiro, P.
López Quintela, M. A.
Caeiro, D.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Magnetic Properties
Small Particles
Yttrium Iron Garnet
topic Magnetic Properties
Small Particles
Yttrium Iron Garnet
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present detailed measurements of field - and temperature - dependence of magnetization in nanocrystalline YIG (Y3Fe5O12) particles. The fine powders were prepared using sol-gel method. Samples with particle sizes ranging from 45 to 450 nm were obtained. We observe that the saturation magnetization decreases as the particle size is reduced due to enhancement of the surface spin effects. Below a critical diameter Ds ≅ 190 nm, the particles become single domains and the coercive forces reaches a maximum at diameters close to the critical value. As the particle size decreases the coercivity diminishes and at Dp ≃ 35 nm diameters the upper limit of superparamagnetic behavior is reached. A quantitative comparison of temperature and particle size dependence of coercivity shows a satisfactory agreement that is expected for an assembly of randomly oriented particles.
Fil: Sanchez, Rodolfo Daniel. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rivas, J.. Universidad de Santiago de Compostela; España
Fil: Vaqueiro, P.. Heriot-watt University; Reino Unido
Fil: López Quintela, M. A.. Universidad de Santiago de Compostela; España
Fil: Caeiro, D.. Universidad de Santiago de Compostela; España
description We present detailed measurements of field - and temperature - dependence of magnetization in nanocrystalline YIG (Y3Fe5O12) particles. The fine powders were prepared using sol-gel method. Samples with particle sizes ranging from 45 to 450 nm were obtained. We observe that the saturation magnetization decreases as the particle size is reduced due to enhancement of the surface spin effects. Below a critical diameter Ds ≅ 190 nm, the particles become single domains and the coercive forces reaches a maximum at diameters close to the critical value. As the particle size decreases the coercivity diminishes and at Dp ≃ 35 nm diameters the upper limit of superparamagnetic behavior is reached. A quantitative comparison of temperature and particle size dependence of coercivity shows a satisfactory agreement that is expected for an assembly of randomly oriented particles.
publishDate 2002
dc.date.none.fl_str_mv 2002-05
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/11336/68575
Sanchez, Rodolfo Daniel; Rivas, J.; Vaqueiro, P.; López Quintela, M. A.; Caeiro, D.; Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method; Elsevier Science; Journal of Magnetism and Magnetic Materials; 247; 1; 5-2002; 92-98
0304-8853
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68575
identifier_str_mv Sanchez, Rodolfo Daniel; Rivas, J.; Vaqueiro, P.; López Quintela, M. A.; Caeiro, D.; Particle size effects on magnetic properties of yttrium iron garnets prepared by a sol-gel method; Elsevier Science; Journal of Magnetism and Magnetic Materials; 247; 1; 5-2002; 92-98
0304-8853
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0304885302001701
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0304-8853(02)00170-1
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
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 13.070432

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