X-ray diffraction and Mossbauer studies on superparamagnetic nickel ferrite (NiFe2O4) obtained by the proteic sol-gel method
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , |
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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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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1813028730261471232 |