| 摘要 |
PURPOSE:To provide a dielectr4ic porcelain composition which has a high permittivity, a large quality factor Q, and is suitable for the microwave region with a near zero temperature coefficient of a resonant frequency tauf. CONSTITUTION:A dielectric porcelain composition of barium, lead titanium, lanthanum and gadolinium family is composed as shown in the formula as a.{(1-w).BaO,w.PbO}.b.TiO2.c.{x.La2O3,(1-x).Gd2O3} (where a,b,c,w,x represent mole ratios and a+b+c=1.0, 0.1<a<0.2, 0.6<b<0.8, 0.1<c<0.2, 0.001<w<0.25, 0.2<x<0.9). |
