CERAMIC CAPACITOR AND PRODUCTION METHOD THEREOF

• Main Author: KANEDA KAZUMI
• Format: Patent
• Language: English; Japanese
• Published: 01.08.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

To provide a ceramic capacitor which can achieve both of the capacitance stability and high reliability, and a production method thereof.SOLUTION: In the ceramic capacitor, each dielectric layer comprises, as a primary component, a ceramic represented by BaTiO(0.9990≤m≤1.0015) and having a perovskite structure and to 100 atm% of Ti, 0.05 atm% or more and 0.35 atm% or less of Mn, 0.4 atm% or more and 0.8 atm% or less of Mg, 0.5 atm% or more and 0.9 atm% or less of at least one rare earth element of Ho and Dy, 0.15 atm% or more and 0.30 atm% or less of V, 0.4 atm% or more and 0.9 atm% or less of Si, and 0.00 atm% or more and 0.45 atm% or less of Ca. The average particle size of ceramic particles forming a ceramic main body is 280 nm or more and 380 nm or less.SELECTED DRAWING: Figure 1 【課題】 容量安定性と高信頼性とを両立することができるセラミックコンデンサおよびその製造方法を提供する。【解決手段】 ＢａｍＴｉＯ３（０．９９９０≦ｍ≦１．００１５）で表されるペロブスカイト構造を有するセラミックを主成分とし、Ｔｉを１００ａｔｍ％とした場合に、Ｍｎを０．０５ａｔｍ％以上０．３５ａｔｍ％以下含み、Ｍｇを０．４ａｔｍ％以上０．８ａｔｍ％以下含み、ＨｏおよびＤｙの少なくともいずれか１つの希土類元素を０．５ａｔｍ％以上０．９ａｔｍ％以下含み、Ｖを０．１５ａｔｍ％以上０．３０ａｔｍ％以下含み、Ｓｉを０．４ａｔｍ％以上０．９ａｔｍ％以下含み、Ｃａを０．００ａｔｍ％以上０．４５ａｔｍ％以下含み、セラミック本体を構成するセラミック粒子の平均粒子径は、２８０ｎｍ以上３８０ｎｍ以下である。【選択図】 図１