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DIELECTRIC CERAMIC, ITS PRODUCING METHOD AND MULTILAYER CERAMIC CAPACITOR 发明申请

2023-09-30 4470 203K 0

专利信息

申请日期 2025-07-18 申请号 JP2006049809
公开(公告)号 JP2007223872A 公开(公告)日 2007-09-06
公开国别 JP 申请人省市代码 全国
申请人 MURATA MANUFACTURING CO
简介 PROBLEM TO BE SOLVED : To provide a dielectric ceramic for use in a dielectric ceramic layer which can give superior bias characteristics, even if a thin layer is used as a dielectric ceramic layer in a multilayer ceramic capacitor. SOLUTION : The dielectric ceramic comprises ABO3 (wherein, A is Ba and the like; B is Ti and the like) as a main component and a rare earth element as an auxiliary component and has crystal grains 21 and a crystal grain boundary. 90% or more of the crystal grains 21 have a surface part 22 having a molar ratio of the rare earth element to Ti of 0.03-0.10 and an inner part 23 having a molar ratio of the rare earth element to Ti of 0.01 or less. The ratio of the average thickness of the surface part 22 to the diameter of the crystal particles 21 is 0.01-0.10. COPYRIGHT : (C)2007, JPO&INPIT


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