Publicação: Effect of the excess of bismuth on the morphology and properties of the BaBi2Nb2O9 thin films
Carregando...
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
In this study, the effect of bismuth content on the crystal structure, morphology and electric properties of barium bismuth niobate (BaBi2Nb2O9) thin films was explored with the aid of X-ray diffraction (XRD), scanning electron microcopy (SEM), atomic force microscopy (AFM) and dielectric properties. BaBi2Nb2O9 (BBN) thin films have been successfully prepared by the polymeric precursor methods and deposited by spin coating on Pt/Ti/SiO2/Si (100) substrates. The phase formation, the grain size and morphology of the thin films were influenced by the addition of bismuth in excess. It was observed that the formation of single phase BBN for films was prepared with excess of bismuth up to 2 wt%. The films prepared with excess of the bismuth showed higher grain size and better dielectric properties. The 2 wt% bismuth excess BBN thin film exhibited dielectric constant of about 335 with a loss of 0.049 at a frequency of 100 kHz at room temperature. (c) 2009 Elsevier Ltd and Techna Group S.r.l. All fights reserved.
Descrição
Palavras-chave
Films, Grain size, Dielectric properties, Niobates
Idioma
Inglês
Como citar
Ceramics International. Oxford: Elsevier B.V., v. 35, n. 8, p. 3143-3146, 2009.
