| 摘要 |
This invention is in the field of ceramic compositions having high dielectric constants and including strontium titanate as the major ingredient. The invention provides an intergranular insulation type semiconductive ceramic composition in which the principal ingredient (at least 50%) is strontium titanate. Strontium titanate can be used as a principal component of a capacitor. Also, the material contains 0.1-2 wt.% SiO2 and 0.1- 2 wt.% Al2O3. The atom ratio of gram is titanium + deped material (Nb or Ta) / strontium. The value of this ratio is 0.9 - 1.04.
|
