Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with gallium

Detalhes bibliográficos
Autor(a) principal: Lobato,A.R.
Data de Publicação: 2000
Outros Autores: Lanfredi,S., Carvalho,J.F., Hernandes,A.C.
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=S1516-14392000000300008
Resumo: Gallium solubility in the Bi12TiO20 (BTO) matrix was investigated by solid state reaction synthesis and Bi12Ti(1-x)Ga xO20 (BTGaO) single crystals were grown by Top Seeded Solution Growth (TSSG). We determined that it is possible to obtain a continuous solid solution from (x)Bi12TiO20: (1-x)Bi12[Ga0.7Bi0.3]O20 and that Ga replaces Ti in the BTO matrix giving Bi12Ti(1-x)Ga(x)O20 up to x < 0.2. BTGaO single crystals grown with an excess of Bi2O3 were transparent, a bleaching effect was observed due to the presence of gallium in the crystalline sillenite structure and their lattice parameter was higher than for pure BTO. The results for BTGaO single crystals showed an increase in the optical activity from rho0 = 6.4° ± 0.3°/mm, for BTO, to rho0 = 9.7° ± 0.3°/mm, for BTGaO grown with x = 0.30 in the melt. The BTGaO crystal presented an activation energy value of 0.48 ± 0.02 eV for 100 °C <= T <= 300 °C.
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spelling Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with galliumcrystal growthbismuth titanium oxideoptical materialGallium solubility in the Bi12TiO20 (BTO) matrix was investigated by solid state reaction synthesis and Bi12Ti(1-x)Ga xO20 (BTGaO) single crystals were grown by Top Seeded Solution Growth (TSSG). We determined that it is possible to obtain a continuous solid solution from (x)Bi12TiO20: (1-x)Bi12[Ga0.7Bi0.3]O20 and that Ga replaces Ti in the BTO matrix giving Bi12Ti(1-x)Ga(x)O20 up to x < 0.2. BTGaO single crystals grown with an excess of Bi2O3 were transparent, a bleaching effect was observed due to the presence of gallium in the crystalline sillenite structure and their lattice parameter was higher than for pure BTO. The results for BTGaO single crystals showed an increase in the optical activity from rho0 = 6.4° ± 0.3°/mm, for BTO, to rho0 = 9.7° ± 0.3°/mm, for BTGaO grown with x = 0.30 in the melt. The BTGaO crystal presented an activation energy value of 0.48 ± 0.02 eV for 100 °C <= T <= 300 °C.ABM, ABC, ABPol2000-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392000000300008Materials Research v.3 n.3 2000reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392000000300008info:eu-repo/semantics/openAccessLobato,A.R.Lanfredi,S.Carvalho,J.F.Hernandes,A.C.eng2000-11-17T00:00:00Zoai:scielo:S1516-14392000000300008Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2000-11-17T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with gallium
title Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with gallium
spellingShingle Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with gallium
Lobato,A.R.
crystal growth
bismuth titanium oxide
optical material
title_short Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with gallium
title_full Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with gallium
title_fullStr Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with gallium
title_full_unstemmed Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with gallium
title_sort Synthesis, crystal growth and characterization of gamma-phase bismuth titanium oxide with gallium
author Lobato,A.R.
author_facet Lobato,A.R.
Lanfredi,S.
Carvalho,J.F.
Hernandes,A.C.
author_role author
author2 Lanfredi,S.
Carvalho,J.F.
Hernandes,A.C.
author2_role author
author
author
dc.contributor.author.fl_str_mv Lobato,A.R.
Lanfredi,S.
Carvalho,J.F.
Hernandes,A.C.
dc.subject.por.fl_str_mv crystal growth
bismuth titanium oxide
optical material
topic crystal growth
bismuth titanium oxide
optical material
description Gallium solubility in the Bi12TiO20 (BTO) matrix was investigated by solid state reaction synthesis and Bi12Ti(1-x)Ga xO20 (BTGaO) single crystals were grown by Top Seeded Solution Growth (TSSG). We determined that it is possible to obtain a continuous solid solution from (x)Bi12TiO20: (1-x)Bi12[Ga0.7Bi0.3]O20 and that Ga replaces Ti in the BTO matrix giving Bi12Ti(1-x)Ga(x)O20 up to x < 0.2. BTGaO single crystals grown with an excess of Bi2O3 were transparent, a bleaching effect was observed due to the presence of gallium in the crystalline sillenite structure and their lattice parameter was higher than for pure BTO. The results for BTGaO single crystals showed an increase in the optical activity from rho0 = 6.4° ± 0.3°/mm, for BTO, to rho0 = 9.7° ± 0.3°/mm, for BTGaO grown with x = 0.30 in the melt. The BTGaO crystal presented an activation energy value of 0.48 ± 0.02 eV for 100 °C <= T <= 300 °C.
publishDate 2000
dc.date.none.fl_str_mv 2000-07-01
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=S1516-14392000000300008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392000000300008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392000000300008
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.3 n.3 2000
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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