Dielectric ceramic composition

Details Dielectric ceramic composition Dielectric ceramic composition

1992-06-26

1994-02-08

Group, Karl

Compositions: ceramic

Ceramic compositions

Titanate, zirconate, stannate, niobate, or tantalate or...

501138, 501139, C04B 3550

Patent

active

052848108

ABSTRACT:
When the ratio of a dielectric ceramic composition is expressed as xPb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 --yPb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 --zPb(Sm.sub.1/2 Nb.sub.1/2) O.sub.3, the values x, y and z are set to lie inside the coordinates A, B, C, D, E (but excluding the segment AE) in a triangular diagram of FIG. 1, and wherein BaTiO.sub.3 is added thereto at a ratio of smaller 10 than 10 mol % and MnO.sub.2 is further added thereto at a ratio of from 0.01 to 0.6% by weight. There is obtained a dielectric ceramic which has a high dielectric constant, a low dissipation factor, a temperature more stable of dielectric constant, a good ceramic density and ceramic strength and that can be baked at a low temperature, and that are usable to MLCCS using Ag-Pd electrodes.

REFERENCES:
patent: 4542107 (1985-09-01), Kato et al.
patent: 4753905 (1988-06-01), Nishioka et al.

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