Dielectric ceramic composition and ceramic electronic component
US6967180B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2004 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Jun 3, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24926
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A dielectric ceramic composition contains 100 parts by weight of a primary component represented by a[(SrbCa1-b)TiO3]-(1−a)[Bi2O3.nTiO2] wherein a and b are moles and n is the molar ratio of TiO2 to Bi2O3; w parts by weight of MgTiO3 x parts by weight of SiO2; y parts by weight of MnOm (MnCO3 equivalent); and z parts by weight of LnOk, wherein m is 1 to 2; Ln is at least one of lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, holmium and erbium; and k is in the range of 1.5 to 2 such that LnOk is electroneutral, wherein a, b, n, w, x, y and z satisfy the relationships 0.90≦a≦0.95, 0.90≦b≦0.95, 1.8≦n≦3.0, 5.0≦w≦10.0, 0.1≦x≦1.0, 0.1≦y≦0.3, and 1.0≦z≦5.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.