Influence of chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3

Detalhes bibliográficos
Autor(a) principal: de Biasi,Ronaldo Sergio
Data de Publicação: 2012
Outros Autores: Grillo,Maria Lúcia Netto
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=S1516-14392012000300020
Resumo: Electron magnetic resonance (EMR) spectra of Cr3+ ions in samples of chromium-doped strontium titanate (SrTiO3) have been studied at room temperature for chromium concentrations between 0.20 and 1.00 mol%. According to previous studies, chromium substitutes Ti4+ sites in the lattice and its preferred valence state is Cr4+, which is EMR silent in the X-band, but the trivalent state can be produced by illumination or codoping with Nb. In the present work, the codoping method was used; the results show the electron magnetic resonance linewidth of the Cr3+ spectrum increases with increasing chromium concentration and that the range of the exchange interaction between Cr3+ ions is about 0.96 nm.
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spelling Influence of chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3ceramicselectron magnetic resonancestrontium titanatechromiumniobiumElectron magnetic resonance (EMR) spectra of Cr3+ ions in samples of chromium-doped strontium titanate (SrTiO3) have been studied at room temperature for chromium concentrations between 0.20 and 1.00 mol%. According to previous studies, chromium substitutes Ti4+ sites in the lattice and its preferred valence state is Cr4+, which is EMR silent in the X-band, but the trivalent state can be produced by illumination or codoping with Nb. In the present work, the codoping method was used; the results show the electron magnetic resonance linewidth of the Cr3+ spectrum increases with increasing chromium concentration and that the range of the exchange interaction between Cr3+ ions is about 0.96 nm.ABM, ABC, ABPol2012-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000300020Materials Research v.15 n.3 2012reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392012005000053info:eu-repo/semantics/openAccessde Biasi,Ronaldo SergioGrillo,Maria Lúcia Nettoeng2012-06-20T00:00:00Zoai:scielo:S1516-14392012000300020Revistahttp://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 chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3
title Influence of chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3
spellingShingle Influence of chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3
de Biasi,Ronaldo Sergio
ceramics
electron magnetic resonance
strontium titanate
chromium
niobium
title_short Influence of chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3
title_full Influence of chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3
title_fullStr Influence of chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3
title_full_unstemmed Influence of chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3
title_sort Influence of chromium concentration on the electron magnetic resonance linewidth of Cr3+ in SrTiO3
author de Biasi,Ronaldo Sergio
author_facet de Biasi,Ronaldo Sergio
Grillo,Maria Lúcia Netto
author_role author
author2 Grillo,Maria Lúcia Netto
author2_role author
dc.contributor.author.fl_str_mv de Biasi,Ronaldo Sergio
Grillo,Maria Lúcia Netto
dc.subject.por.fl_str_mv ceramics
electron magnetic resonance
strontium titanate
chromium
niobium
topic ceramics
electron magnetic resonance
strontium titanate
chromium
niobium
description Electron magnetic resonance (EMR) spectra of Cr3+ ions in samples of chromium-doped strontium titanate (SrTiO3) have been studied at room temperature for chromium concentrations between 0.20 and 1.00 mol%. According to previous studies, chromium substitutes Ti4+ sites in the lattice and its preferred valence state is Cr4+, which is EMR silent in the X-band, but the trivalent state can be produced by illumination or codoping with Nb. In the present work, the codoping method was used; the results show the electron magnetic resonance linewidth of the Cr3+ spectrum increases with increasing chromium concentration and that the range of the exchange interaction between Cr3+ ions is about 0.96 nm.
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=S1516-14392012000300020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392012000300020
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392012005000053
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
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