| 专利名称： | Dielectric ceramic composition and electronic device |
| 公开（告）号： | |
| 公开（公告）日： | 2007-04-05 00:00:00 |
| 申请（专利）号： | US20060527703(US2007078049) |
| 申请日： | 2006-09-27 00:00:00 |
| 发明（设计）人： | TDK CORP (JP) |
| (申请)专利权（人）： | NONAKA TOMOAKI (JP);SASAKI HIROSHI (JP) |
| 内容： | A dielectric ceramic composition comprising a predetermined main component and a fifth subcomponent including an oxide of A (note that A is at least one king selected from a cation element group having an effective ionic radius of 0.065 nm to 0.085 nm at the time of 6 coordination); and the dielectric ceramic composition comprises a plurality of crystal grains including Ca elements and, when assuming that an average value of a concentration of entire Ca exiting in said respective crystal grains is grain Ca concentration, at least unevenness exists in said grain Ca concentration between said crystal grains and it is 5% or higher in a CV value. |
发布日期：2007-08-27 09:53:00