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A dielectric ceramic and its manufacturing method, and laminated ceramic capacitor 发明授权

2023-01-04 3220 779K 0

专利信息

申请日期 2025-07-10 申请号 JP2005016090
公开(公告)号 JP4720193B2 公开(公告)日 2011-07-13
公开国别 JP 申请人省市代码 全国
申请人 Murata Manufacturing Co Ltd6231
简介 PROBLEM TO BE SOLVED : To provide a dielectric ceramic having small electrostriction under a high electric field, high dielectric constant and excellent temperature characteristic of the dielectric constant. SOLUTION : In the dielectric ceramic comprising a solid solution consisting of a perovskite structure expressed by ABO3(where, A contains Ba, B contains Ti) and containing a rare earth element R as a main phase particle, the main phase particle is formed from 2 regions of a 1st region high in the concentration of the rare earth element and a 2nd region low in the concentration of the rare earth element. When an optional cross-section of the dielectric ceramic is observed, the value of D90 in the distribution of the diameter in the 2nd region is COPYRIGHT : (C)2006, JPO&NCIPI


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