Dielectric ceramic composition and electronic device
US7580242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2008 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Feb 21, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/79
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention aims at providing a dielectric ceramic composition including BamTiO2+m where “m” satisfies 0.99≦m≦1.01 and BanZrO2+n where “n” satisfies 0.99≦n≦1.01, an oxide of Mg, an oxide of R where R is at least one selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, an oxide of at least one element selected from Mn, Cr, Co and Fe, and an oxide of at least one element selected from Si, Li, Al, Ge and B. 35 to 65 moles of BanZrO2+n, 4 to 12 moles of an oxide of Mg, 4 to 15 moles of an oxide of R, 0.5 to 3 moles of an oxide of Mn, Cr, Co and Fe, and 3 to 9 moles of an oxide of Si, Li, Al, Ge and B are included therein per 100 moles of the BamTiO2+m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.