| 摘要 |
PROBLEM TO BE SOLVED: To provide a dielectric ceramic composition for high-frequency use, having high Q-value in high-frequency range and exhibiting suppressed lowering of Q-value at high temperature (120 deg.C) compared with the Q-value at normal temperature (25 deg.C). SOLUTION: The objective composition is produced by adding <=3 pts.wt. of Mn to 100 pts.wt. of main component having a composition expressed by x ((1-a)BaO.aSrO).y (1-b)MgO.bAO}.zWO3 (A is at least one kind of element selected from iron group metals and Zn) and satisfying the formulas 0<a<1, 0.01<=b<=0.7, 0.40<=x<=0.55, 0.15<=y<=0.30, 0.20<=z<=0.30 and x+y+z=1. |
