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Abstract

A dielectric ceramic powder and multilayer ceramic capacitors made from the powders are disclosed. A dielectric start powder mixture includes at least ninety weight percent essentially pure barium titanate powder having an average particle size of from 0.2 to 1.2 microns; from 0.2 to 2.5 weight percent of barium lithium borosilicate; from 0.1 to 0.3 weight percent of MnCO.sub.3 ; 0.4 to 1.50 weight percent Nb.sub.2 0.sub.5 or a niobate compound, or a molar equivalent of Ta.sub.2 O.sub.5 or a tantalum compound as a grain growth inhibitor; and, 0.4 to 1.2 weight percent of gadolinium oxide (Gd.sub.2 O.sub.3). The start powder mixture is calcined and then sintered in an open zirconia setter at from 950.degree. C. to 1,025.degree. C. to produce a dielectric ceramic body that satisfies X7R capacitor performance characteristics; that includes no hazardous heavy metal oxides; and, that may include silver-palladium electrodes having 85 weight percent or more of silver.

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