Cracks developed during SrTiO3 thin-film preparation from polymeric precursors

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorZanetti, S. M.-
Autor(es): dc.creatorLeite, E. R.-
Autor(es): dc.creatorLongo, E.-
Autor(es): dc.creatorVarela, J. A.-
Data de aceite: dc.date.accessioned2025-08-21T18:22:35Z-
Data de disponibilização: dc.date.available2025-08-21T18:22:35Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued1999-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/(sici)1099-0739(199905)13:5<373-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/231654-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/231654-
Descrição: dc.descriptionStrontium titanatc (SrTiO3) thin films were prepared by dip-coating Si(111) single-crystal substrates in citrate solutions of ethylene glycol, considering several citric acid/ethylene glycol (CA/EG) ratios. Measurements of intrinsic viscosity indicate that increasing the amount of EG increases the precursors' polymeric chains and increases the weight loss. After deposition the substrates were dried on a hotplate (≈150 °C); this was followed by heat treatment at temperatures ranging from 500 to 700 °C using heating and cooling rates of 1 °C min-1. SEM and optical microscopy investigations of the sintered films obtained from different CA/EG ratios indicate that there is a critical thickness above which the films present cracks. This critical thickness for SrTiO3 films deposited on the Si(111) substrate is about 150 nm. Measurements of crack spacing as a function of film thickness indicate that the origin of cracks cannot be explained by the elastic behavior of the film but rather by the viscoelastic relaxation of the film during pyrolysis and sintering. Copyright © 1999 John Wiley & Sons, Ltd.-
Descrição: dc.descriptionDepartamento de Química Univ. Federal de São Carlos, PO Box 676, 13560 São Carlos, SP-
Descrição: dc.descriptionInstituto de Química Universidade Estadual Paulista, PO Box 355, 14800 Araraquara, SP-
Descrição: dc.descriptionInstituto de Química Universidade Estadual Paulista, PO Box 355, 14800 Araraquara, SP-
Formato: dc.format373-382-
Idioma: dc.languageen-
Relação: dc.relationApplied Organometallic Chemistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCitric acid-
Palavras-chave: dc.subjectCracking-
Palavras-chave: dc.subjectEthylene glycol-
Palavras-chave: dc.subjectSol/gel process-
Palavras-chave: dc.subjectStrontium titanate-
Palavras-chave: dc.subjectThin films-
Título: dc.titleCracks developed during SrTiO3 thin-film preparation from polymeric precursors-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.