High dielectric constant type ceramic composition
US4818736A · kind A · utility
7Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1988 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Feb 11, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/1254
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
When a portion of the Pb of a Pb(Zn.sub.1/3 Nb.sub.2/3)O.sub.3 -based ceramic composition within the region bounded by lines connecting a, b, c and d points in the ternary composition diagram of the accompanying FIG. 1 is substituted by a small amount of Ba and/or Sr, a high dielectric constant type ceramic composition which has a small temperature coefficient of dielectric constant and which is effective as a material for multilayer ceramic capacitors is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.