Dielectric ceramic composition and ceramic electronic component

Details Dielectric ceramic composition and ceramic electronic component Dielectric ceramic composition and ceramic electronic component

2005-11-22

2005-11-22

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

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

C428S210000, C428S700000

Reexamination Certificate

active

06967180

ABSTRACT:
A dielectric ceramic composition contains 100 parts by weight of a primary component represented by a[(SrbCa1-b)TiO3]-(1−a)[Bi2O3.nTiO2] wherein a and b are moles and n is the molar ratio of TiO2to Bi2O3; w parts by weight of MgTiO3x parts by weight of SiO2; y parts by weight of MnOm(MnCO3equivalent); and z parts by weight of LnOk, wherein m is 1 to 2; Ln is at least one of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, holmium and erbium; and k is in the range of 1.5 to 2 such that LnOkis electroneutral, wherein a, b, n, w, x, y and z satisfy the relationships 0.90≦a≦0.95, 0.90≦b≦0.95, 1.8≦n≦3.0, 5.0≦w≦10.0, 0.1≦x≦1.0, 0.1≦y≦0.3, and 1.0≦z≦5.0.

REFERENCES:
patent: 4482934 (1984-11-01), Hirota et al.
patent: 4746639 (1988-05-01), Sano et al.
patent: 2003/0137797 (2003-07-01), Kimoto et al.
patent: 1987-187556 (1985-11-01), None
patent: 3-274606 (1991-12-01), None
patent: 4-264307 (1992-09-01), None
European Search Report issued Oct. 28, 2004.

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