Dielectric material
US7189673B2 · kind B2 · utility
2Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2004 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Dec 11, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/768
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A dielectric material containing at least one of Ca and Sr, Ti, Al, at least one of Nb and Ta, and O, wherein these elements fulfill the following four requirements when represented by a compositional formula, aM1O-bTiO2-(½)cAl2O3-(½)dM22O5 wherein M1 represents the at least one of Ca and Sr; M2 represents the at least one of Nb and Ta; and a, b, c and d represent each a molar ratio, provided that a+b+c+d=1: 0.436<a≦0.500; 0.124<b≦0.325; 0.054<c≦0.150; and 0.170<d<0.346.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.