Abstract: A low temperature sinterable dielectric ceramic composition, as well as a multilayer ceramic chip capacitor and a ceramic electronic device. The dielectric ceramic composition comprises a major composition represented by the general formula: x{?BaO, (1??)SrO}-y{SiO2}-z{(1??)ZrO2, ? Al2O3} (wherein x, y and z are weight percentages; x+y+z=100, 55?x?75, 10?y?35, and 5?z?30, ? and ? are moles; 0.4???0.8, and 0.01???0.07) and 2 to 10 parts by weight of a Zn—B-silicate glass composition, per 100 parts by weight of the major composition.

Abstract: A low temperature sinterable dielectric ceramic composition, as well as a multilayer ceramic chip capacitor and a ceramic electronic device. The dielectric ceramic composition comprises a major composition represented by the general formula: x{&agr; BaO, (1−&agr;)SrO}-y{SiO2}-z{(1−&bgr;)ZrO2, &bgr; Al2O3} (wherein x, y and z are weight percentages; x+y+z=100, 55≦x≦75, 10≦y≦35, and 5≦z≦30, &agr; and &bgr; are moles; 0.4≦&agr;≦0.8, and 0.01≦&bgr;≦0.07) and 2 to 10 parts by weight of a Zn—B-silicate glass composition, per 100 parts by weight of the major composition.

Abstract: The disclosed invention relates to Bi2O3—ZnO—Ta2O5 dielectric compounds and compositions, and to their manufacture. The compounds of the invention have outstanding K, Q, TCF, and TCC. Examples of these properties include a K of between 58 and 80, a low dielectric loss (tan &dgr;<0.003), and a TCC<30 ppm/° C. Ceramic compositions produced include those represented by Bi2(ZnTa2)xO6x+3 where 0.57≦x≦1.0, Bi2(ZnTay)2/3O((5y+11)/3) where 1.0≦y≦3.0, as well as by Bi2(ZnTay)2/3O((5y+11)/3) where 1.0≦y≦3.0 with the proviso that y is not=2.0. Solid solutions of compounds defined by the formula r(Bi2(Zn1/3Ta2/3)2O7)-(1−r)(Bi3/2Zn2/3)(Zn1/2Ta3/2)O7)) where 0<r<1 also are produced.

Abstract: The disclosed invention relates to Bi2O3—ZnO—Ta2O5 dielectric compounds and compositions, and to their manufacture. The compounds of the invention have outstanding K, Q, TCF, and TCC. Examples of these properties include a K of between 58 and 80, a low dielectric loss (tan &dgr;<0.003), and a TCC<30 ppm/° C. Ceramic compositions produced include those represented by Bi2(ZnTa2)xO6x+3 where 0.57≦x≦1.0, Bi2(ZnTay)⅔O((5y+11)/3) where 1.0≦y≦3.0, as well as by Bi2(ZnTay)⅔O((5y+11)/3) where 1.0≦y≦3.0 with the proviso that y is not=2.0. Solid solutions of compounds defined by the formula r(Bi2(Zn⅓Ta⅔)2O7)-(1−r)(Bi{fraction (3/2)}Zn⅔)(Zn½Ta{fraction (3/2)})O7))where 0<r<1 also are produced.

Abstract: A dielectric ceramic composition for microwave applications consists essentially of the compound having a formula B'B.sub.2 "O.sub.6, wherein B' is at least one metal selected from the group of Mg, Ca, Co, Mn,Ni and Zn, and wherein B" is one of Nb or Ta, and additionally includes at least one compound selected from the group of CuO, V.sub.2 O.sub.5, La.sub.2 O.sub.3, Sb.sub.2 O.sub.5, WO.sub.3, MnCO.sub.3, MgO, SrCO.sub.3, ZNO, and Bi.sub.2 O.sub.3 as an additive, wherein the amount of the additive is 0.05% to 2.0% by weight of the total weight of the composition.