Method for preparing dielectric ceramic compositions
US6593263B2 · kind B2 · utility
1Cited by
3References
4Claims
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Key dates
| Filing date | May 29, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jan 22, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/453
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention discloses a method for preparing Ba(Zn1/3Ta2/3)O3 dielectric ceramic compositions. In accordance with the present invention, by adding a small amount of Al2O3, Ga2O3, ZrO2, or TiO2, which can generate metal ion having an atomic value of 3+ or 4+, the problems occurring during the sintering of BZT due to the volatilization of Zn can be solved. Also, the BZT dielectrics obtained from the present method have a Q value of 200,000, which is higher than the pure BZT, a dielectric constant of 28.5 or more and a resonant frequency temperature coefficient of near 0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.