Young & Thompson
Dielectric porcelain composition having a high dielectric constant and a low sintering temperature
 A dielectric porcelain composition includes lead magnesium tungstate (Pb(Mg.sub.1/2 W.sub.1/2)O.sub.3), lead titanate (PbTiO.sub.3) and lead zirconate (PbZrO.sub.3) as main components at composition ratios of x, y and z respectively, wherein a point (x, y, z) in a ternary system is positioned on or within a boundary which comprises four straight line segments defined by four points of (0.725, 0.25, 0.025), (0.45, 0.525, 0.025), (0.30, 0.30, 0.40) and (0.475, 0.125, 0.40) in said ternary system as illustrated in FIG. 1, and wherein said main components are added with at least one rare earth oxide at a molar ratio in the range of 0.1-5.0 mol %. 
NEC Corporation
C C
C04B C04B
inventional inventional
Toru
Mori