Dielectric ceramic composition of microwave MGTIO.sub.3 CATIO.sub.3 group and dielectric ceramic fabrication method using the same
AssigneesElectronics and Telecommunications Research Institute, Korea Telecom
InventorsJin Woo Hahn, Duk Jun Kim, Gee Pyeong Han, Yark Yeon Kim, Sang Seok Lee, Tae Goo Choy
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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.
Claims2
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, said composition being sintered at a temperature of 1100 to 1250.degree. C., and said composition being expressed as follows:
- (Composition equation)
- (94MgTiO.sub.3 -6CaTiO.sub.3)+xLi.sub.2 CO.sub.3 (Mol %)
- wherein x lies within a range of 0.2.ltoreq.x.ltoreq.0.4 (mol %), and Li.sub.2 CO.sub.3 of x mole % is added in excess to the main composition.
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 and MgO as a sub-component, said composition being sintered at a temperature of 1100 to 1250.degree. C., and said composition being expressed as follows:
- (Composition equation)
- (94MgTiO.sub.3 -6CaTiO.sub.3)+xLi.sub.2 CO.sub.3 +yMgO (mol %)
- wherein x and V lies within a range of 0.2.ltoreq.x.ltoreq.0.4 (mol %), 0<y.ltoreq.6 (mol %), and Li.sub.2 CO.sub.3 of x mol % and MgO of y mol % are added in excess to the main composition simultaneously.
Dependencies are inferred from the claim text.