Preparation and properties of colloidal particles. Silica on yttrium iron garnet

Detalhes bibliográficos
Autor(a) principal: Godoi, R. H.M. [UNESP]
Data de Publicação: 2000
Outros Autores: Jafelicci, M. [UNESP], Portillo, Joaquim
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/219230
Resumo: Various properties of particles can be altered by coating them with a layer of different chemical composition. Yttrium iron garnet (YIG) particles has been coated with silica for control of their sintering, corrosion resistance, and stabilization of magnetic properties. This silica cover was obtained by hydrolysis of tetraethylorthosilicate (TEOS) in 2-propanol. This material was characterized by transmission (TEM) electron microscopy, (XEDS) X-ray energy-dispersive spectrometry, (XPS) X-ray photoemission spectroscopy and (VSM) vibrating sample magnetometry. YIG was heterocoagulated by silica as indicated by TEM micrographies. XPS measurements indicated that only binding energy for silicon and oxygen was found on the silica shell, which confirms that the YIG was covered. The values of the saturation magnetization differ from the heterocoagulated system to well-crystallized YIG. © 2000 Materials Research Society.
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spelling Preparation and properties of colloidal particles. Silica on yttrium iron garnetVarious properties of particles can be altered by coating them with a layer of different chemical composition. Yttrium iron garnet (YIG) particles has been coated with silica for control of their sintering, corrosion resistance, and stabilization of magnetic properties. This silica cover was obtained by hydrolysis of tetraethylorthosilicate (TEOS) in 2-propanol. This material was characterized by transmission (TEM) electron microscopy, (XEDS) X-ray energy-dispersive spectrometry, (XPS) X-ray photoemission spectroscopy and (VSM) vibrating sample magnetometry. YIG was heterocoagulated by silica as indicated by TEM micrographies. XPS measurements indicated that only binding energy for silicon and oxygen was found on the silica shell, which confirms that the YIG was covered. The values of the saturation magnetization differ from the heterocoagulated system to well-crystallized YIG. © 2000 Materials Research Society.São Paulo State University- Chemistry Institute Campus of AraraquaraSeveis Cientifico Tecnics University of Barcelona, BarcelonaSão Paulo State University- Chemistry Institute Campus of AraraquaraUniversidade Estadual Paulista (UNESP)University of BarcelonaGodoi, R. H.M. [UNESP]Jafelicci, M. [UNESP]Portillo, Joaquim2022-04-28T18:54:29Z2022-04-28T18:54:29Z2000-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article21-26Materials Research Society Symposium - Proceedings, v. 581, p. 21-26.0272-9172http://hdl.handle.net/11449/2192302-s2.0-0033707482Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research Society Symposium - Proceedingsinfo:eu-repo/semantics/openAccess2022-04-28T18:54:29Zoai:repositorio.unesp.br:11449/219230Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:11:56.417683Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Preparation and properties of colloidal particles. Silica on yttrium iron garnet
title Preparation and properties of colloidal particles. Silica on yttrium iron garnet
spellingShingle Preparation and properties of colloidal particles. Silica on yttrium iron garnet
Godoi, R. H.M. [UNESP]
title_short Preparation and properties of colloidal particles. Silica on yttrium iron garnet
title_full Preparation and properties of colloidal particles. Silica on yttrium iron garnet
title_fullStr Preparation and properties of colloidal particles. Silica on yttrium iron garnet
title_full_unstemmed Preparation and properties of colloidal particles. Silica on yttrium iron garnet
title_sort Preparation and properties of colloidal particles. Silica on yttrium iron garnet
author Godoi, R. H.M. [UNESP]
author_facet Godoi, R. H.M. [UNESP]
Jafelicci, M. [UNESP]
Portillo, Joaquim
author_role author
author2 Jafelicci, M. [UNESP]
Portillo, Joaquim
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
University of Barcelona
dc.contributor.author.fl_str_mv Godoi, R. H.M. [UNESP]
Jafelicci, M. [UNESP]
Portillo, Joaquim
description Various properties of particles can be altered by coating them with a layer of different chemical composition. Yttrium iron garnet (YIG) particles has been coated with silica for control of their sintering, corrosion resistance, and stabilization of magnetic properties. This silica cover was obtained by hydrolysis of tetraethylorthosilicate (TEOS) in 2-propanol. This material was characterized by transmission (TEM) electron microscopy, (XEDS) X-ray energy-dispersive spectrometry, (XPS) X-ray photoemission spectroscopy and (VSM) vibrating sample magnetometry. YIG was heterocoagulated by silica as indicated by TEM micrographies. XPS measurements indicated that only binding energy for silicon and oxygen was found on the silica shell, which confirms that the YIG was covered. The values of the saturation magnetization differ from the heterocoagulated system to well-crystallized YIG. © 2000 Materials Research Society.
publishDate 2000
dc.date.none.fl_str_mv 2000-01-01
2022-04-28T18:54:29Z
2022-04-28T18:54:29Z
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 Materials Research Society Symposium - Proceedings, v. 581, p. 21-26.
0272-9172
http://hdl.handle.net/11449/219230
2-s2.0-0033707482
identifier_str_mv Materials Research Society Symposium - Proceedings, v. 581, p. 21-26.
0272-9172
2-s2.0-0033707482
url http://hdl.handle.net/11449/219230
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Research Society Symposium - Proceedings
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 21-26
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)
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