Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites

Detalhes bibliográficos
Autor(a) principal: Zabotto,Fabio Luis
Data de Publicação: 2012
Outros Autores: Gualdi,Alexandre José, Eiras,Jose Antonio, Oliveira,Adilson Jesus Aparecido de, Garcia,Ducinei
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000300014
Resumo: This study evaluates the structural, microstructural, electric and magnetic properties of nickel ferrite samples prepared through the solid state reaction. It was observed that an increase in the sintering temperature produces a higher cation concentration in the A site when compared to the B site. The assessment of magnetic properties showed that an increase in grain size leads to a decrease in the coercive fields verging on superparamagnetic values, while the saturation magnetization increases up to 46.5 Am².kg-1 for samples sintered at 1200 ºC. The dc electric resistivity behavior of samples was attributed to the increase in the cross-sectional area of grains as well as the different oxidation states and distribution of cations amongst the lattice sites of the spinel structure.
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spelling Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferritesprocessingnickel ferritesmagnetic propertieselectric resistivityThis study evaluates the structural, microstructural, electric and magnetic properties of nickel ferrite samples prepared through the solid state reaction. It was observed that an increase in the sintering temperature produces a higher cation concentration in the A site when compared to the B site. The assessment of magnetic properties showed that an increase in grain size leads to a decrease in the coercive fields verging on superparamagnetic values, while the saturation magnetization increases up to 46.5 Am².kg-1 for samples sintered at 1200 ºC. The dc electric resistivity behavior of samples was attributed to the increase in the cross-sectional area of grains as well as the different oxidation states and distribution of cations amongst the lattice sites of the spinel structure.ABM, ABC, ABPol2012-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000300014Materials Research v.15 n.3 2012reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392012005000043info:eu-repo/semantics/openAccessZabotto,Fabio LuisGualdi,Alexandre JoséEiras,Jose AntonioOliveira,Adilson Jesus Aparecido deGarcia,Ducineieng2012-06-20T00:00:00Zoai:scielo:S1516-14392012000300014Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2012-06-20T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites
title Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites
spellingShingle Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites
Zabotto,Fabio Luis
processing
nickel ferrites
magnetic properties
electric resistivity
title_short Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites
title_full Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites
title_fullStr Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites
title_full_unstemmed Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites
title_sort Influence of the sintering temperature on the magnetic and electric properties of NiFe2O4 ferrites
author Zabotto,Fabio Luis
author_facet Zabotto,Fabio Luis
Gualdi,Alexandre José
Eiras,Jose Antonio
Oliveira,Adilson Jesus Aparecido de
Garcia,Ducinei
author_role author
author2 Gualdi,Alexandre José
Eiras,Jose Antonio
Oliveira,Adilson Jesus Aparecido de
Garcia,Ducinei
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Zabotto,Fabio Luis
Gualdi,Alexandre José
Eiras,Jose Antonio
Oliveira,Adilson Jesus Aparecido de
Garcia,Ducinei
dc.subject.por.fl_str_mv processing
nickel ferrites
magnetic properties
electric resistivity
topic processing
nickel ferrites
magnetic properties
electric resistivity
description This study evaluates the structural, microstructural, electric and magnetic properties of nickel ferrite samples prepared through the solid state reaction. It was observed that an increase in the sintering temperature produces a higher cation concentration in the A site when compared to the B site. The assessment of magnetic properties showed that an increase in grain size leads to a decrease in the coercive fields verging on superparamagnetic values, while the saturation magnetization increases up to 46.5 Am².kg-1 for samples sintered at 1200 ºC. The dc electric resistivity behavior of samples was attributed to the increase in the cross-sectional area of grains as well as the different oxidation states and distribution of cations amongst the lattice sites of the spinel structure.
publishDate 2012
dc.date.none.fl_str_mv 2012-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000300014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000300014
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392012005000043
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.15 n.3 2012
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212661298462720

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