Patent ID: 9266781
Filing Date: 2016-02-23
CPC Classification: B32B,B82Y,C01G,C01P,C04B,H01G

Claim Text:
1. A preparation process of a nano complex oxide doped dielectric ceramic material used for a multilayer ceramic capacitor, wherein said doped dielectric ceramic material comprises barium titanate and a nano complex oxide dopant, a molar ratio of the barium titanate to the nano complex oxide dopant is in the range of (90 to 98):(2 to 10), an average particle size of the barium titanate is in a range of 50 nm to 300 nm and the nano complex oxide dopant has the following formula (1): wherein, A represents one or more selected from the group consisting of CaTiO B represents one or more selected from the group consisting of MnO C represents one or more selected from the group consisting of SiO D represents an oxide of Re, wherein Re is one or more rare-earth elements selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; and w, x, y and z are molar percentages of the oxides with respect to the barium titanate, wherein w is 0.01% to 2%, x is 0.01% to 3%, y is 0.1% to 6%, and z is 0% to 4%, and said preparation process is a chemical coating process comprising the following steps: