Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/20793 |
Resumo: | Nanocrystalline particles of magnesioferrite (MgFe2O4) were prepared by a sol-gel/combustion method using iron nitrate, Fe(NO3)3.9H2O, magnesium nitrate, Mg(NO3)2.6H2O, and citric acid, C6H8O7.H2O, and annealed for 2 hours at 400, 500 and 600 °C. The average particle size, determined by X ray diffraction, was found to depend on the annealing temperature and varied from 〈D〉 = 8.1 to 〈D〉 = 17.8 nm. By measuring at several temperatures the relative intensity of the Mössbauer spectra due to superparamagnetic particles and to ferrimagnetic particles, we determined the size distribution of the nanoparticles in the samples. It was found to be a log-normal distribution with a most probable diameter that varied from Dm = 6.4 to 17.2 nm and a full width at half-height ΔD in the 5-6 nm range. |
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Biasi, Ronaldo Sergio deCardoso, Lúcia Helena GuimarãesCampos, José Brant deSanchez Candela, Dalber RubenCunha, Joao Batista Marimon da2010-04-16T09:16:39Z20091516-1439http://hdl.handle.net/10183/20793000708477Nanocrystalline particles of magnesioferrite (MgFe2O4) were prepared by a sol-gel/combustion method using iron nitrate, Fe(NO3)3.9H2O, magnesium nitrate, Mg(NO3)2.6H2O, and citric acid, C6H8O7.H2O, and annealed for 2 hours at 400, 500 and 600 °C. The average particle size, determined by X ray diffraction, was found to depend on the annealing temperature and varied from 〈D〉 = 8.1 to 〈D〉 = 17.8 nm. By measuring at several temperatures the relative intensity of the Mössbauer spectra due to superparamagnetic particles and to ferrimagnetic particles, we determined the size distribution of the nanoparticles in the samples. It was found to be a log-normal distribution with a most probable diameter that varied from Dm = 6.4 to 17.2 nm and a full width at half-height ΔD in the 5-6 nm range.application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 12, no. 2 (Apr./June 2009), p. 225-227Ciência dos materiaisNanopartículasEspectroscopia mossbauerRessonancia ferromagneticaNanoparticlesMössbauer spectroscopyMaegnesioferriteInfluence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion methodinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT000708477.pdf.txt000708477.pdf.txtExtracted Texttext/plain9006http://www.lume.ufrgs.br/bitstream/10183/20793/2/000708477.pdf.txt817da387d2969e65e9bbe22d3586eccfMD52ORIGINAL000708477.pdf000708477.pdfTexto completo (inglês)application/pdf376033http://www.lume.ufrgs.br/bitstream/10183/20793/1/000708477.pdf098169a8c20ed065837f1f6b7023259eMD51THUMBNAIL000708477.pdf.jpg000708477.pdf.jpgGenerated Thumbnailimage/jpeg1779http://www.lume.ufrgs.br/bitstream/10183/20793/3/000708477.pdf.jpg87b97e2004637f8d1cc1b8d7cb4be06aMD5310183/207932021-06-12 04:40:32.988573oai:www.lume.ufrgs.br:10183/20793Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-06-12T07:40:32Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method |
title |
Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method |
spellingShingle |
Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method Biasi, Ronaldo Sergio de Ciência dos materiais Nanopartículas Espectroscopia mossbauer Ressonancia ferromagnetica Nanoparticles Mössbauer spectroscopy Maegnesioferrite |
title_short |
Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method |
title_full |
Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method |
title_fullStr |
Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method |
title_full_unstemmed |
Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method |
title_sort |
Influence of annealing on magnesioferrite nanoparticles synthesized by a sol-gel/combustion method |
author |
Biasi, Ronaldo Sergio de |
author_facet |
Biasi, Ronaldo Sergio de Cardoso, Lúcia Helena Guimarães Campos, José Brant de Sanchez Candela, Dalber Ruben Cunha, Joao Batista Marimon da |
author_role |
author |
author2 |
Cardoso, Lúcia Helena Guimarães Campos, José Brant de Sanchez Candela, Dalber Ruben Cunha, Joao Batista Marimon da |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Biasi, Ronaldo Sergio de Cardoso, Lúcia Helena Guimarães Campos, José Brant de Sanchez Candela, Dalber Ruben Cunha, Joao Batista Marimon da |
dc.subject.por.fl_str_mv |
Ciência dos materiais Nanopartículas Espectroscopia mossbauer Ressonancia ferromagnetica |
topic |
Ciência dos materiais Nanopartículas Espectroscopia mossbauer Ressonancia ferromagnetica Nanoparticles Mössbauer spectroscopy Maegnesioferrite |
dc.subject.eng.fl_str_mv |
Nanoparticles Mössbauer spectroscopy Maegnesioferrite |
description |
Nanocrystalline particles of magnesioferrite (MgFe2O4) were prepared by a sol-gel/combustion method using iron nitrate, Fe(NO3)3.9H2O, magnesium nitrate, Mg(NO3)2.6H2O, and citric acid, C6H8O7.H2O, and annealed for 2 hours at 400, 500 and 600 °C. The average particle size, determined by X ray diffraction, was found to depend on the annealing temperature and varied from 〈D〉 = 8.1 to 〈D〉 = 17.8 nm. By measuring at several temperatures the relative intensity of the Mössbauer spectra due to superparamagnetic particles and to ferrimagnetic particles, we determined the size distribution of the nanoparticles in the samples. It was found to be a log-normal distribution with a most probable diameter that varied from Dm = 6.4 to 17.2 nm and a full width at half-height ΔD in the 5-6 nm range. |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009 |
dc.date.accessioned.fl_str_mv |
2010-04-16T09:16:39Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
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info:eu-repo/semantics/publishedVersion |
format |
article |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/20793 |
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1516-1439 |
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000708477 |
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1516-1439 000708477 |
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http://hdl.handle.net/10183/20793 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 12, no. 2 (Apr./June 2009), p. 225-227 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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