Use este identificador para citar ou linkar para este item: http://www.repositorio.ufc.br/handle/riufc/2886
Título: Composite screen-printed thick films for high dielectric constant devices: Bi4Ti3O12–CaCu3Ti4O12 films
Autor(es): Sabóia, K. D. A.
Fechine, Pierre Basílio Almeida
Santos, Manoel Roberval Pimentel
Freire, Francisco Nivaldo Aguiar
Pereira, Francisca Maria Martins
Sombra, Antonio Sergio Bezerra
Palavras-chave: Raio X - Difração
Espectroscopia
Data do documento: 2007
Editor: Polymer Composites
Citação: SABÓIA, K. D. A. ; FECHINE, P. B. A. ; SANTOS, M. R. P. ; FREIRE, F. N. A. ; PEREIRA, F. M. M. ; SOMBRA, A. S. B. (2007)
Abstract: In this paper, we did a study of the effect of the presence of BIT (Bi4Ti3O12) in the dielectric and optical properties of the CaCu3Ti4O12 (CCTO) thick films. The films were prepared by the solid sate procedure. Mechanical alloying followed by the solid state procedure has been used successfully to produce powders of CaCu3Ti4O12 (CCTO) and BIT (Bi4Ti3O12) to be used in the composites. We also look at the effect of the grain size of the BIT and CCTO in the final properties of the composite film. The samples were studied using XRay diffraction, scanning electron microscopy (SEM), Raman and infrared spectroscopy. We also did a study of the dielectric function (K) and dielectric loss (D) of the films. The role played by the grain size of CCTO and BIT in the dielectric constant and structural properties of the films are discussed. These measurements confirm the potential use of such materials for small high dielectric planar devices. These films are also attractive for capacitor applications and certainly for microelectronics, microwave devices (mobile phones for example), where the miniaturization of the devices is crucial.
Descrição: SABÓIA, K. D. A. et al. Composite screen-printed thick films for high dielectric constant devices: Bi4Ti3O12–CaCu3Ti4O12 films. Polymer Composites, v. 28, p. 771-777, 2007.
URI: http://www.repositorio.ufc.br/handle/riufc/2886
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