X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method

Detalhes bibliográficos
Autor(a) principal: Nogueira, Núbia Alves de Souza
Data de Publicação: 2015
Outros Autores: Utuni, Vegner Hizau dos Santos, Silva, Yuri Cruz da, Kiyohara, Pedro Kunihiko, Vasconcelos, Igor Frota de, Miranda, Marcus Aurélio Ribeiro, Sasaki, José Marcos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/67570
Resumo: Nickel ferrite (NiFe2O4) nanoparticles were synthesized by the proteic sol–gel method at synthesis temperature of 250 °C, 300 °C and 400 °C, with the objective of obtaining superparamagnetic nanoparticles. Thermogravimetric analysis (TGA) and temperature-programed oxidation (TPO) presented peaks around 290 °C indicating that nickel ferrite was forming at this temperature. X-ray powder diffraction (XRPD) confirmed that the polycrystalline sample was single phased NiFe2O4 with space group Fd3m. Scherrer equation applied to the diffraction patterns and transmission electron microscopy (TEM) images showed that the size of the nanoparticles ranged from 9 nm to 13 nm. TEM images also revealed that the nanoparticles were agglomerated, which was supported by the low values of surface area provided by the Brunauer-Emmet-Teller (BET) method. Mossbauer spectroscopy presented spectra composed of a superposition of three components: a sextet, a doublet and a broad singlet pattern. The sample synthetized at 300 °C had the most pronounced doublet pattern characteristic of superparamagnetic nanoparticles. In conclusion, this method was partially successful in obtaining superparamagnetic nickel ferrite nanoparticles, in which the synthetized samples were a mixture of nanoparticles with blocking temperature above and below room temperature. Magnetization curves revealed a small hysteresis, supporting the Mossbauer results. The sample with the higher concentration of superparamagnetic nanoparticles being the one synthetized at 300 °C.
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spelling X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel methodNanostructuresMagnetic materialsPowder diffractionMossbauer effecSol–gel growthMicrostructureNickel ferrite (NiFe2O4) nanoparticles were synthesized by the proteic sol–gel method at synthesis temperature of 250 °C, 300 °C and 400 °C, with the objective of obtaining superparamagnetic nanoparticles. Thermogravimetric analysis (TGA) and temperature-programed oxidation (TPO) presented peaks around 290 °C indicating that nickel ferrite was forming at this temperature. X-ray powder diffraction (XRPD) confirmed that the polycrystalline sample was single phased NiFe2O4 with space group Fd3m. Scherrer equation applied to the diffraction patterns and transmission electron microscopy (TEM) images showed that the size of the nanoparticles ranged from 9 nm to 13 nm. TEM images also revealed that the nanoparticles were agglomerated, which was supported by the low values of surface area provided by the Brunauer-Emmet-Teller (BET) method. Mossbauer spectroscopy presented spectra composed of a superposition of three components: a sextet, a doublet and a broad singlet pattern. The sample synthetized at 300 °C had the most pronounced doublet pattern characteristic of superparamagnetic nanoparticles. In conclusion, this method was partially successful in obtaining superparamagnetic nickel ferrite nanoparticles, in which the synthetized samples were a mixture of nanoparticles with blocking temperature above and below room temperature. Magnetization curves revealed a small hysteresis, supporting the Mossbauer results. The sample with the higher concentration of superparamagnetic nanoparticles being the one synthetized at 300 °C.Materials Chemistry and Physics2022-08-08T18:10:16Z2022-08-08T18:10:16Z2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfNOGUEIRA, Núbia Alves Souza et al. X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method. Materials Chemistry and Physics, [s. l.], v. 163, p. 402-406, 2015.0254-0584http://www.repositorio.ufc.br/handle/riufc/67570Nogueira, Núbia Alves de SouzaUtuni, Vegner Hizau dos SantosSilva, Yuri Cruz daKiyohara, Pedro KunihikoVasconcelos, Igor Frota deMiranda, Marcus Aurélio RibeiroSasaki, José Marcosengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2022-08-10T13:07:44Zoai:repositorio.ufc.br:riufc/67570Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:16:05.896086Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method
title X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method
spellingShingle X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method
Nogueira, Núbia Alves de Souza
Nanostructures
Magnetic materials
Powder diffraction
Mossbauer effec
Sol–gel growth
Microstructure
title_short X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method
title_full X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method
title_fullStr X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method
title_full_unstemmed X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method
title_sort X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method
author Nogueira, Núbia Alves de Souza
author_facet Nogueira, Núbia Alves de Souza
Utuni, Vegner Hizau dos Santos
Silva, Yuri Cruz da
Kiyohara, Pedro Kunihiko
Vasconcelos, Igor Frota de
Miranda, Marcus Aurélio Ribeiro
Sasaki, José Marcos
author_role author
author2 Utuni, Vegner Hizau dos Santos
Silva, Yuri Cruz da
Kiyohara, Pedro Kunihiko
Vasconcelos, Igor Frota de
Miranda, Marcus Aurélio Ribeiro
Sasaki, José Marcos
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Nogueira, Núbia Alves de Souza
Utuni, Vegner Hizau dos Santos
Silva, Yuri Cruz da
Kiyohara, Pedro Kunihiko
Vasconcelos, Igor Frota de
Miranda, Marcus Aurélio Ribeiro
Sasaki, José Marcos
dc.subject.por.fl_str_mv Nanostructures
Magnetic materials
Powder diffraction
Mossbauer effec
Sol–gel growth
Microstructure
topic Nanostructures
Magnetic materials
Powder diffraction
Mossbauer effec
Sol–gel growth
Microstructure
description Nickel ferrite (NiFe2O4) nanoparticles were synthesized by the proteic sol–gel method at synthesis temperature of 250 °C, 300 °C and 400 °C, with the objective of obtaining superparamagnetic nanoparticles. Thermogravimetric analysis (TGA) and temperature-programed oxidation (TPO) presented peaks around 290 °C indicating that nickel ferrite was forming at this temperature. X-ray powder diffraction (XRPD) confirmed that the polycrystalline sample was single phased NiFe2O4 with space group Fd3m. Scherrer equation applied to the diffraction patterns and transmission electron microscopy (TEM) images showed that the size of the nanoparticles ranged from 9 nm to 13 nm. TEM images also revealed that the nanoparticles were agglomerated, which was supported by the low values of surface area provided by the Brunauer-Emmet-Teller (BET) method. Mossbauer spectroscopy presented spectra composed of a superposition of three components: a sextet, a doublet and a broad singlet pattern. The sample synthetized at 300 °C had the most pronounced doublet pattern characteristic of superparamagnetic nanoparticles. In conclusion, this method was partially successful in obtaining superparamagnetic nickel ferrite nanoparticles, in which the synthetized samples were a mixture of nanoparticles with blocking temperature above and below room temperature. Magnetization curves revealed a small hysteresis, supporting the Mossbauer results. The sample with the higher concentration of superparamagnetic nanoparticles being the one synthetized at 300 °C.
publishDate 2015
dc.date.none.fl_str_mv 2015
2022-08-08T18:10:16Z
2022-08-08T18:10:16Z
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 NOGUEIRA, Núbia Alves Souza et al. X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method. Materials Chemistry and Physics, [s. l.], v. 163, p. 402-406, 2015.
0254-0584
http://www.repositorio.ufc.br/handle/riufc/67570
identifier_str_mv NOGUEIRA, Núbia Alves Souza et al. X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method. Materials Chemistry and Physics, [s. l.], v. 163, p. 402-406, 2015.
0254-0584
url http://www.repositorio.ufc.br/handle/riufc/67570
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Materials Chemistry and Physics
publisher.none.fl_str_mv Materials Chemistry and Physics
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
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