Diffuse Effect of the Tungsten Doped Ba(Zr0.10Ti0.90)O3 Ferroelectric Ceramics
Nenhuma Miniatura disponível
Data
2009-12-01
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Trabalho apresentado em evento
Direito de acesso
Acesso aberto
Resumo
Barium zirconate titanate Ba(Ti0.90Zr0.10)O3 ceramics doped with WO<inf>3</inf> (BZT:2W) have been prepared by a traditional solid phase reaction. The effect of temperature on the structural and electrical properties was investigated. X ray diffraction data evidenced formation of secondary phases for the samples sintered at 1300oC end 1350oC while the pure phase was attained at 1200oC. A modified Curie-Weiss law was used to describe the diffuseness of a phase transition. As temperature increases, the maximum dielectric permittivity decreased. The fine-grained sample showed a 'diffuse-like' ferroelectric behavior. The dielectric permittivity reaches a maximum value (εm ~6420 at 10 kHz) for the ceramics sintered at 1200oC for 4 hours.
Descrição
Palavras-chave
Barium zirconate titanates , Dielectric permittivities , Effect of temperature , Ferroelectric behavior , Solid phase reaction , Structural and electrical properties , Temperature increase , X-ray diffraction data , Barium zirconate , Electric properties , Exhibitions , Ferroelectric ceramics , Permittivity , Sintering , X ray diffraction , Zirconium , Ceramic materials
Idioma
Inglês
Como citar
11th International Conference and Exhibition of the European Ceramic Society 2009, v. 1, p. 376-380.