Dielectric ceramic composition and multilayer ceramic electronic component
US11072564B2 · kind B2 · utility
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Key dates
| Filing date | Jul 15, 2019 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | Sep 1, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/96
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A dielectric ceramic composition having improved insulation specific resistance and a highly accelerated lifetime. The dielectric ceramic composition includes a dielectric particle having a core-shell structure including a main component expressed by a general formula ABO3, where A is Ba and the like, and B is Ti and the like), and a rare earth element component R, in which a shell part of the core-shell structure has an average rare earth element concentration C of 0.3 atom % or more. The rare earth element has a specified concentration gradient or concentration variation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.