Dielectric ceramic composition, dielectric ceramic, and...

Details Dielectric ceramic composition, dielectric ceramic, and... Dielectric ceramic composition, dielectric ceramic, and...

2007-06-19

2007-06-19

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

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

C501S122000, C428S210000, C428S701000, C428S702000

Reexamination Certificate

active

10543234

ABSTRACT:
A dielectric ceramic composition which can be sintered at such a temperature of about 800 to 1000° C. as to permit incorporation of and multilayer formation with a low resistant conductor such as Ag or Cu by the simultaneous sintering with the low resistant conductor, which is sintered to form dielectric ceramics having a dielectric constant εrof not more than 10, and a resonator having a large Q×f0value and an absolute value in temperature coefficient τfof resonance frequency f0of not more than 20 ppm/° C., the value being easy to be controlled. The dielectric ceramic composition contains a glass component in an amount of 5 to 150 parts by weight based on 100 parts by weight of a main component represented by general formula: aZnAl2O4-bZn2SiO4-cTiO2-dZn2TiO4, in which the molar fractions of respective components a, b, c, and d satisfy 5.0≦a≦80.0 mol % 5.0≦b≦70.0 mol %, 5.0≦c≦27.5 mol %, 0≦d≦30.0 mol % (a+b+c+d=100 mol %) The main component may also be represented by aMg2SiO4-bZn2Al2O4-cSiO2-dCaTiO3-eZn2SiO4.

REFERENCES:
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