Dielectric Measurement of BaTiO3 Powder and Its Statistical Analysis
Dielectric permittivity of BaTiO3 powders was determined by measuring permittivity of slurries prepared from BaTiO3 powder and propylene carbonate as dispersion medium followed by analyzing with a finite element methods (FEM). The permittivity of powders depended on their characters such as tetragonality (c/a ratio), density, particle size and specific surface area. In order to extract the effect of each character, a statistical analysis was carried out to represent the permittivity of powders with an empirical equation where the c/a ratio, density and particle size were used as parameters. A fairly good agreement between observed data and those estimated from the relation was obtained and the contribution of each character to the permittivity could be determined.
Masaru Miyayama, Tadashi Takenaka, Masasuke Takata and Kazuo Shinozaki
T. Sekine et al., "Dielectric Measurement of BaTiO3 Powder and Its Statistical Analysis", Key Engineering Materials, Vol. 301, pp. 251-256, 2006