| 摘要 |
PURPOSE:To obtain a large CR product even if the thickness of a dielectric porcelain layer is reduced and further enable miniaturization of capacitors by specifying a basic component, composed of BaTiO3, NbO2.5 and CoO and expressed by the formula and magnesium oxide and calcium zirconate. CONSTITUTION:The aforementioned dielectric porcelain composition is formed from 100 pts.wt. basic component, 0.01-0.25 pt.wt. magnesium oxide and 0.2-3 pts.wt. calcium zirconate. The above-mentioned basic component is expressed by the composition formula, alphaBaTiO3+betaNbO2.5+gammaCoO [alpha is 0.95-0.99; beta is 0.006-0.042; gamma is 0.002-0.02; (alpha+beta+gamma)=1]. |
