- 专利标题： Multilayer ceramic capacitor including main phase grains and a secondary phase
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申请号： US14662532申请日： 2015-03-19
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公开(公告)号： US09748041B2公开(公告)日： 2017-08-29
- 发明人: Masahiro Naito
- 申请人： Murata Manufacturing Co., Ltd.
- 申请人地址： JP Kyoto
- 专利权人： MURATA MANUFACTURING CO., LTD.
- 当前专利权人： MURATA MANUFACTURING CO., LTD.
- 当前专利权人地址： JP Kyoto
- 代理机构： Keating & Bennett, LLP
- 优先权： JP2014-065613 20140327; JP2015-027519 20150216
- 主分类号： H01G4/30
- IPC分类号： H01G4/30 ; H01G4/12
摘要：
A dielectric ceramic layer includes main phase grains and a secondary phase. The main phase grains include a perovskite-type compound. The perovskite-type compound includes Zr, Mn and at least one element selected from the group consisting of Ti, Ca, Sr, and Ba. In the perovskite-type compound, a molar ratio z between Ti/(Zr+Ti) satisfies 0≦z≦0.2, a molar ratio between Zr/(Zr+Ti) is equal to 1−z, a molar ratio x between Sr/(Ca+Sr+Ba) satisfies 0≦x≦1.0, a molar ratio y between Ba/(Ca+Sr+Ba) satisfies 0≦y≦0.3, a molar ratio between Ca/(Ca+Sr+Ba) is equal to 1−x−y, and a molar ratio m between (Ca+Sr+Ba)/(Zr+Ti) satisfies 0.95≦m
公开/授权文献
- US20150279564A1 MULTILAYER CERAMIC CAPACITOR 公开/授权日：2015-10-01
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