| 摘要 |
PURPOSE:To obtain a dielectric ceramic composition capable of improving dielectric constant and simultaneously having coefficient of thermal expansion nearly equivalent to that of alumina and a package for housing semiconductor. CONSTITUTION:When a composition formula by mol ratio is expressed by xTiO2-yMgO-zSrO, the composition contains <=0.6 pts.wt. Mn expressed in terms of oxide based on 100 pts.wt. main component in the area surrounded by the following points of A, B, C and D in the Figure: A (100, 0, 0), B (72, 0, 28), C (57, 15, 28) and D (66.7, 33.3, 0). |
