Ceramic material and capacitor comprised thereof
US9878955B2 · kind B2 · utility
0Cited by
5References
13Claims
0Family size
Inventor
Key dates
| Filing date | Feb 13, 2015 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Feb 13, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/79
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a ceramic material for capacitors. In order to achieve reduced self-heating on assembly of the material into multilayer capacitors with antiferroelectric properties and a high dielectric constant, a ceramic material of formula ┌Pb(1-r)(BaxSryCaz)r┘(1-1.5a-1.5b-0.5c)(XaYb)Ac(Zr1-dTid)O3 is proposed, where X and Y both represent a rare metal earth selected from the group consisting of La, Nd, Y, Eu, Gd, Tb, Dy, Ho, Er and/or Yb; where A represents a monovalent ion; x+y+z=1; x and/or y and/or z>0; 0<r<0.3; 0<d<1; 0<a<0.2; 0<b<0.2; 0<c<0.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.