Electrical characterization of BaTiO\+v\3\-v\ made by hydrothermal methods

The manufacture of MLCs requires improved precursor powders. The dielectric properties of barium titanate made from hydrothermally precipitated material are compared with those obtained commercially and prepared by calcination. The greater porosity of hydrothermal powders tends to reduce their effective dielectric constant but preheating them to 950\0\C before sintering produced high density ceramic. Dielectric loss is higher than in materials produced by traditional methods. Grain size of these ceramics is less sensitive to sintering temperature than those made using calcined powders, with no anomalous grain growth. (Original abstract-amended)