| 发明名称 | Ceramic powder and multi-layer ceramic capacitor | ||
| 摘要 | A multi-layer ceramic capacitor is made by alternately layering a dielectric layer constituted by a sintered body of a ceramic powder, and an internal electrode layer. The ceramic powder contains barium titanate powder having a perovskite structure with a median size of 200 nm or smaller as measured by SEM observation, wherein the barium titanate powder is such that the percentage of barium titanate particles having twin defects in the barium titanate powder is 13% or more as measured by TEM observation and that its crystal lattice c/a is 1.0080 or more. The ceramic powder has a wide range of optimum sintering temperatures and thus offers excellent productivity and is particularly useful in the formation of thin dielectric layers of 1 μm or less. | ||
| 申请公布号 | US9514883(B2) | 申请公布日期 | 2016.12.06 |
| 申请号 | US201514657761 | 申请日期 | 2015.03.13 |
| 申请人 | TAIYO YUDEN CO., LTD. | 发明人 | Mizuno Youichi |
| 分类号 | C04B35/624;H01G4/12;C04B35/468;C01G23/00;C04B35/626;H01G4/30;B82Y30/00 | 主分类号 | C04B35/624 |
| 代理机构 | Law Office of Katsuhiro Arai | 代理人 | Law Office of Katsuhiro Arai |
| 主权项 | 1. A multi-layer ceramic capacitor made by alternately layering a dielectric layer constituted by a sintered body of a ceramic powder, and an internal electrode layer, said ceramic powder containing barium titanate powder having a perovskite structure with a median size of 200 nm or smaller as measured by SEM observation, wherein the barium titanate powder is such that the percentage of barium titanate particles having twin defects in the barium titanate powder is 13% or more as measured by TEM observation and that its crystal lattice c/a is 1.0080 or more. | ||
| 地址 | Tokyo JP | ||