Anelastic spectroscopy in TiO2
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4028/www.scientific.net/MSF.498-499.540 http://hdl.handle.net/11449/68602 |
Resumo: | Titanium dioxide (rutile) has a lot of interesting and useful features and hence is widely utilized for application. It has been used as white pigment, photocatalyst, biocompatible material and semiconductor material used in solar battery. In semiconducting TiO2 oxygen vacancies are said to play an important role in the electrical conduction. Measurements of the elastic energy loss and modulus (anelastic spectroscopy) as a function of temperature can distinguish among the different atomic jumps, which occur in the various phases or at different local ordering. In this paper, it is reported anelastic relaxation measurements in TiO2 samples using a torsion pendulum operating in frequencies around 40Hz, in the temperature range between -173°C to 330°C with heating rate of 1°C/min. The results shown a reduction in the elasticity modulus with the increase in the corn starch content used for this consolidation. |
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Anelastic spectroscopy in TiO2Anelastic spectroscopyMobility of atomsRelaxationTitanium dioxideEnergy dissipationFunction evaluationPigmentsRelaxation processesSolar cellsSpectroscopic analysisTitanium dioxide (rutile) has a lot of interesting and useful features and hence is widely utilized for application. It has been used as white pigment, photocatalyst, biocompatible material and semiconductor material used in solar battery. In semiconducting TiO2 oxygen vacancies are said to play an important role in the electrical conduction. Measurements of the elastic energy loss and modulus (anelastic spectroscopy) as a function of temperature can distinguish among the different atomic jumps, which occur in the various phases or at different local ordering. In this paper, it is reported anelastic relaxation measurements in TiO2 samples using a torsion pendulum operating in frequencies around 40Hz, in the temperature range between -173°C to 330°C with heating rate of 1°C/min. The results shown a reduction in the elasticity modulus with the increase in the corn starch content used for this consolidation.Grupo de Relaxações Anelásticas Departamento de Física UNESP, 17033-360, Bauru, SPLaboratório de Plasmas Departamento de Física e Química UNESP, 12516-410, Guaratinguetá, SPEscola de Especialistas de Aeronáutica (EEAR), 12500-000, Guaratinguetá, SPGrupo de Relaxações Anelásticas Departamento de Física UNESP, 17033-360, Bauru, SPLaboratório de Plasmas Departamento de Física e Química UNESP, 12516-410, Guaratinguetá, SPUniversidade Estadual Paulista (Unesp)Escola de Especialistas de Aeronáutica (EEAR)Grandini, Carlos Roberto [UNESP]Oliveira, R. L N [UNESP]Mota, Rogério Pinto [UNESP]Santos, F. P.Campos, E.2014-05-27T11:21:44Z2014-05-27T11:21:44Z2005-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject540-545http://dx.doi.org/10.4028/www.scientific.net/MSF.498-499.540Materials Science Forum, v. 498-499, p. 540-545.0255-5476http://hdl.handle.net/11449/6860210.4028/www.scientific.net/MSF.498-499.540WOS:0002339845000882-s2.0-352488797130000-0002-3336-309XScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Science Forum0,180info:eu-repo/semantics/openAccess2024-07-01T20:52:56Zoai:repositorio.unesp.br:11449/68602Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:06:52.131763Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Anelastic spectroscopy in TiO2 |
title |
Anelastic spectroscopy in TiO2 |
spellingShingle |
Anelastic spectroscopy in TiO2 Grandini, Carlos Roberto [UNESP] Anelastic spectroscopy Mobility of atoms Relaxation Titanium dioxide Energy dissipation Function evaluation Pigments Relaxation processes Solar cells Spectroscopic analysis |
title_short |
Anelastic spectroscopy in TiO2 |
title_full |
Anelastic spectroscopy in TiO2 |
title_fullStr |
Anelastic spectroscopy in TiO2 |
title_full_unstemmed |
Anelastic spectroscopy in TiO2 |
title_sort |
Anelastic spectroscopy in TiO2 |
author |
Grandini, Carlos Roberto [UNESP] |
author_facet |
Grandini, Carlos Roberto [UNESP] Oliveira, R. L N [UNESP] Mota, Rogério Pinto [UNESP] Santos, F. P. Campos, E. |
author_role |
author |
author2 |
Oliveira, R. L N [UNESP] Mota, Rogério Pinto [UNESP] Santos, F. P. Campos, E. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Escola de Especialistas de Aeronáutica (EEAR) |
dc.contributor.author.fl_str_mv |
Grandini, Carlos Roberto [UNESP] Oliveira, R. L N [UNESP] Mota, Rogério Pinto [UNESP] Santos, F. P. Campos, E. |
dc.subject.por.fl_str_mv |
Anelastic spectroscopy Mobility of atoms Relaxation Titanium dioxide Energy dissipation Function evaluation Pigments Relaxation processes Solar cells Spectroscopic analysis |
topic |
Anelastic spectroscopy Mobility of atoms Relaxation Titanium dioxide Energy dissipation Function evaluation Pigments Relaxation processes Solar cells Spectroscopic analysis |
description |
Titanium dioxide (rutile) has a lot of interesting and useful features and hence is widely utilized for application. It has been used as white pigment, photocatalyst, biocompatible material and semiconductor material used in solar battery. In semiconducting TiO2 oxygen vacancies are said to play an important role in the electrical conduction. Measurements of the elastic energy loss and modulus (anelastic spectroscopy) as a function of temperature can distinguish among the different atomic jumps, which occur in the various phases or at different local ordering. In this paper, it is reported anelastic relaxation measurements in TiO2 samples using a torsion pendulum operating in frequencies around 40Hz, in the temperature range between -173°C to 330°C with heating rate of 1°C/min. The results shown a reduction in the elasticity modulus with the increase in the corn starch content used for this consolidation. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-12-01 2014-05-27T11:21:44Z 2014-05-27T11:21:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4028/www.scientific.net/MSF.498-499.540 Materials Science Forum, v. 498-499, p. 540-545. 0255-5476 http://hdl.handle.net/11449/68602 10.4028/www.scientific.net/MSF.498-499.540 WOS:000233984500088 2-s2.0-35248879713 0000-0002-3336-309X |
url |
http://dx.doi.org/10.4028/www.scientific.net/MSF.498-499.540 http://hdl.handle.net/11449/68602 |
identifier_str_mv |
Materials Science Forum, v. 498-499, p. 540-545. 0255-5476 10.4028/www.scientific.net/MSF.498-499.540 WOS:000233984500088 2-s2.0-35248879713 0000-0002-3336-309X |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Science Forum 0,180 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
540-545 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129585001267200 |