发明名称 |
DIELECTRIC CERAMIC, METHOD OF MANUFACTURING THE SAME, AND MONOLITHIC CERAMIC CAPACITOR |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a highly reliable dielectric ceramic which is suitable for constituting the dielectric ceramic layers of a monolithic ceramic capacitor obtained by firing under a reducing atmosphere and of which the temperature dependence of the dielectric constant is not deteriorated in proportion to its thickness reduction. <P>SOLUTION: The dielectric ceramic is composed of ABO<SB>3</SB>(wherein, A is Ba or the like; and B is Ti or the like) as a main component and a rare earth element. When the cross section of each crystal grain 21 constituting the dielectric ceramic is observed, at least 70% of the crystal grains 21 have a cross-section in which a rare earth element solid solution area 22 occupies 5 to 70% of the area of the cross section and an area where rare earth elements are not forming a solid solution 23 occupies 10 to 80% of the periphery of the cross-section. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
申请公布号 |
JP2004189588(A) |
申请公布日期 |
2004.07.08 |
申请号 |
JP20030374042 |
申请日期 |
2003.11.04 |
申请人 |
MURATA MFG CO LTD |
发明人 |
NAKAMURA TOMOYUKI;KONAKA HIROYASU;SANO HARUNOBU |
分类号 |
C04B35/46;C04B35/49;H01G4/12 |
主分类号 |
C04B35/46 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|