Claims
- 1. A ceramic capacitor comprising a plurality of spaced electrodes and a dielectric material therebetween, said dielectric material having a Q of at least about 500 at 1 MHz, a dielectric constant of from about 100 to 150 at temperatures of from -55.degree. to 125.degree. C., a pyrochlore crystal structure which is represented by the formula
- (1-y)Pb(Zn.sub.x Nb.sub.1-x)O.sub.3.5-1.5x.yPbTiO.sub.3
- wherein x is from 0.3 to 0.4 and y is from 0 to less than 0.1.
- 2. The ceramic capacitor recited in claim 1 wherein the dielectric was sintered at a temperature of about 980.degree. C..+-.20.degree. C.
- 3. The ceramic capacitor recited in claim 1 wherein y is zero.
- 4. The ceramic capacitor recited in claim 1 wherein y is from 0.02 to 0.05.
- 5. The ceramic capacitor recited in claim 1 which is in the form of a sintered multilayer capacitor.
- 6. A dielectric material represented by the formula
- (1-y)Pb(Zn.sub.x Nb.sub.1-x)O.sub.3.5-1.5x.yPbTiO.sub.3
- wherein x is from 0.3 to 0.4 and y is from 0 to less than 0.1.
- 7. The dielectric material recited in claim 6 prepared by sintering at 980.degree. C..+-.20.degree. C.
- 8. The dielectric material as recited in claim 6 wherein y is zero.
- 9. The dielectric material as recited in claim 6 wherein y is from 0.02 to 0.05.
- 10. The dielectric material recited in claim 6 wherein y is from 0 to 0.05.
- 11. The dielectric material recited in claim 10 prepared by sintering at 980.degree. C..+-.20.degree. C.
- 12. A ceramic capacitor comprising a plurality of spaced electrodes and a dielectric material therebetween, said dielectric material having a Q of at least about 500 at 1 MHz, a dielectric constant of from about 100 to 150 at temperatures of from -55.degree. to 125.degree. C., a pyrochlore crystal structure which is represented by the formula
- (1-y)Pb(Zn.sub.x Nb.sub.1-x)O.sub.3.5-1.5x.yPbTiO.sub.3
- wherein x is from 0.3 to 0.4 and y is from 0 to 0.05.
- 13. The ceramic capacitor recited in claim 12 wherein the dielectric was sintered at a temperature of about 980.degree. C..+-.20.degree. C.
- 14. The ceramic capacitor recited in claim 12 which is in the form of a sintered multilayer capacitor.
- 15. A ceramic capacitor comprising a plurality of spaced electrodes and a dielectric material therebetween, said dielectric material represented by the formula
- (1-y)Pb(Zn.sub.x Nb.sub.1-x)O.sub.3.5-1.5x.yPbTiO.sub.3
- wherein x is from 0.3 to 0.4 and y is from 0 to less than 0.1.
Parent Case Info
This is a continuation of application Ser. No. 642,327, filed 8/20/84 and now abandoned.
US Referenced Citations (5)
Continuations (1)
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Number |
Date |
Country |
Parent |
642327 |
Aug 1984 |
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