Dielectric ceramic composition of microwave MGTIO.sub.3 CATIO.su

Details Dielectric ceramic composition of microwave MGTIO.sub.3 CATIO.su Dielectric ceramic composition of microwave MGTIO.sub.3 CATIO.su

1998-11-06

2000-11-14

Group, Karl

Compositions: ceramic

Ceramic compositions

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

C04B 35465

Patent

active

06147021&

ABSTRACT:
A dielectric ceramic composition for a microwave device including MgTiO.sub.3 and CaTiO.sub.3 as a main component and a Li.sub.2 CO.sub.3 as a sub-component is provided. The composition being expressed as follows: (94MgTiO.sub.3 -6CaTiO.sub.3)+xLi.sub.2 CO.sub.3 (mol %), where 0.2.ltoreq.x.ltoreq.0.8 (mol %). Therefore, it is capable of increasing a quality factor and decreasing a sintering temperature by adding a new component and effectively reproducing the above-described dielectric characteristic.

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V.M. Ferreira et al., "Loss Spectra of Pure and La-doped MgTiO.sub.3 Microwave ceramics", 1995 Materials Research Society, vol. 10, No. 9, Sep. 1995, pp. 2301-2305.
Victor M. Ferreira et al., "Role of Niobium in Magnesium Titanate Microwave Dielectric Ceramics", Communications of the American Ceramic Society, vol. 79, No. 6, pp. 1697-1698.
V.M. Ferreira et al., "The Effect of Cr and La on MgTiO.sub.3 and MgTiO.sub.3 -CaTiO.sub.3 Microwave Dielectric Ceramics", 1997 Materials Research Society, vol. 12, No. 12, Dec. 1997, pp. 3293-3299.

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