Composition of dielectric ceramics
US5459115A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1993 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Sep 22, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/1254
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The dielectric composition according to the present invention is used in a microwave band and is characterized in having a low sintering temperature and a property to be controllable independently in the respect of a dielectric constant and a temperature coefficient of the resonant frequency. The dielectric composition is represented by the formula: EQU A.sub.1+a BO.sub.3+a (a.ltoreq.0) wherein A site mainly contains at least Pb atom and Ca atom which is more than 20 wt % of A and further may contain Sr or Ba atom, and B site mainly contains Fe and Nb atoms and further contains at least one atom selected from the group comprising Ti and W and may contain at least one atom selected from the group comprising Cr, Mn, Co, Ni, Cu, Zn, Si, Al, Mg, Bi and Sb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.