Abstract A dielectric ceramic composition having a composition represented by the formula xBaO-yNd.sub.2 O.sub.3 -z(Ti.sub.1-m Zr.sub.m)O.sub.2 wherein x+y+z=1.00 0<m≦0.25 and x, y, and z are in the molar ratio region surrounded by the points a, b, c, and d which are represented by the following x-y-z coordinates: ______________________________________ x y z
______________________________________
a 0.15 0.12 0.73
b 0.15 0.18 0.67
c 0.05 0.18 0.77
d 0.05 0.12 0.83
______________________________________
A dielectric ceramic composition having a composition represented by the formula xBaO-yNd.sub.2 O.sub.3 -z(Ti.sub.1-m Zr.sub.m)O.sub.2 wherein x+y+z=1.00, m is between 0.05 and 0.25, and x, y, and z are in the molar ratio region surrounded by the points a, b, c, and d which are represented by the following x-y-z coordinates: ______________________________________
x y z
______________________________________
a 0.15 0.12 0.73
b 0.15 0.18 0.67
c 0.05 0.18 0.77
d 0.05 0.12 0.83
______________________________________ said composition being free of bismuth.
Claim 2
Dependent Claim
79 words
A dielectric ceramic composition having a composition represented by the formula xBaO-yNd.sub.2 O.sub.3 -z(Ti.sub.1-m Zr.sub.m)O.sub.2 wherein x+y+z=1.00, m is between 0.05 and 0.25, and x, y, and z are in the molar ratio region surrounded by the points a, b, c, and d which are represented by the following x-y-z coordinates: ______________________________________
x y z
______________________________________
a 0.15 0.12 0.73
b 0.15 0.18 0.67
c 0.05 0.18 0.77
d 0.05 0.12 0.83
______________________________________ said composition being free of bismuth.
Claim 3
Dependent Claim
58 words
A dielectric ceramic composition according to claim 1, which contains, besides said main components, at least one member selected from oxides of manganese, chromium, iron, nickel, and cobalt in amounts of 0.05-100% by weight of the total weight of the main components, in terms each of MnO 2 , Cr 2 O 3 , FeO, NiO, and CoO.