Title:
誘電体セラミックおよびその製造方法ならびに積層セラミックコンデンサ
Document Type and Number:
Japanese Patent JP5067401
Kind Code:
B2
Abstract:
A laminated ceramic capacitor is provided which is excellent in reliability even when its dielectric ceramic layers thinned. For a dielectric ceramic in a laminated ceramic capacitor, a ceramic is used which includes a main component containing a barium titanate based composite oxide represented by the general formula: (Ba1-h-m-xCahSrmRex)k(Ti1-n-yZrnMy)O3, where Re is La or the like, M is Mg or the like, and the respective relationships of 0.05≰x≰0.50, 0.02≰y≰0.3, 0.85≰k≰1.05, 0≰h≰0.25, 0≰m≰0.50, and 0≰n≰0.40 are satisfied; and an accessory component as a sintering aid, wherein the average grain diameter of crystal grains in a sintered body is 0.6 μm or less.
Inventors:
Hitoshi Nishimura
Tokuyuki Inoue
Takashi Okamoto
Tokuyuki Inoue
Takashi Okamoto
Application Number:
JP2009154634A
Publication Date:
November 07, 2012
Filing Date:
June 30, 2009
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
C04B35/468; C04B35/49; H01B3/12; H01G4/12; H01G4/30
Domestic Patent References:
| JP2005008471A | ||||
| JP2006199563A | ||||
| JP2002050536A | ||||
| JP2008222522A |
Foreign References:
| WO2006025205A1 | ||||
| WO2008013236A1 |
Attorney, Agent or Firm:
Masaaki Koshiba