Use este identificador para citar ou linkar para este item: http://www.repositorio.ufc.br/handle/riufc/2476
Título: Optical and electrical properties of barium titanate-hydroxyapatite composite screen-printed thick films
Autor(es): Almeida, Ana Fabíola Leite
Fechine, P. B. A.
Sasaki, J.M.
Ayala, A. P.
Góes, J. C.
Pontes, D. L.
Margulis, W.
Sombra, Antonio Sérgio B.
Palavras-chave: Fimes espessos
Data do documento: 2004
Editor: Solid State Sciences
Citação: ALMEIDA, A. F. L. ; FECHINE, P. B. A. ; SASAKI, J. M. ; AYALA, A. P. ; GÓES, J. C. ; PONTES , D. L. ; MARGULIS, W. ; SOMBRA, A. S. B. (2004)
Abstract: In this paper we will study the effect of the presence of hydroxyapatite (HA—Ca10(PO4)6(OH)2) on the dielectric permittivity and losses of the barium titanate (BTO—BaTiO3) thick films. These films were prepared in two layers geometry using the screen printing technique on Al2O3 substrates. Mechanical alloying has been used successfully to produce nanocrystalline powders of hydroxyapatite (HA) used in the films. We also look for the effect of the grain size of the BTO and HA on the final properties of the film. The samples were studied using X-ray diffraction, scanning electron microscopy (SEM), Raman and infrared spectroscopies, dielectric permittivity and losses measurements. The study of the dielectric permittivity and losses was done in the radio-frequency range (100 Hz–10 MHz). The role played by the firing process in the film preparation and the crystallite size of HA and BTO on the dielectric constant and structural properties of the films are discussed.
Descrição: ALMEIDA, A. F. L. et al. Optical and electrical properties of barium titanate-hydroxyapatite composite screen-printed thick films. Solid State Sciences, v. 6, p. 267-278, 2004.
URI: http://www.repositorio.ufc.br/handle/riufc/2476
ISSN: 1293-2558
Aparece nas coleções:DEME - Artigos publicados em revista científica

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
2004_art_aflalmeida optical and electrical.pdf1,01 MBAdobe PDFVisualizar/Abrir


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.