Dielectric properties of ultrafine grained BaTiO(3).
The dielectric constant and spontaneous polarization of fine-grained BaTiO(3) prepared from powder produced by metalloorganic decomposition technology were studied. The room-temperature dielectric constant of BaTiO(3) was found to increase sharply with increase in grain size, reach a maximum at about 0.4 mum, and decrease with further increase in grain size. Spontaneous polarization continuously decreased with decrease in grain size. A model is proposed to explain the grain size dependence of the dielectric constant.
Shaikh
A S
AS
Ferro Corp., Santa Barbara, CA.
Vest
R W
RW
Vest
G M
GM