| 摘要 |
PURPOSE:To provide the subject composition having a high dielectric constant, a low dielectric loss factor and improved reliability and not producing a semiconductor even when sintered under a low oxygen fractional pressure by adding MnO2, Dy2O3 and Y2O3 to a BaTiO3 complex oxide one part of whose Ti is substituted with Zr. CONSTITUTION:MnO2, Dy2O3, Y2O3 and, if necessary, 0.1-1mol% of Yb2O3 and/or TlO2 and 0.1-2mol% of NiO and/or Co2O3 are added to a BaTiO3 complex oxide to provide a dielectric porcelain composition, the BaTiO3 complex oxide being prepared by substituting one part of Ti in BaTiO3 with Zr. The composition is mixed with an organic binder, a solvent and a plasticizes and the prepared slurry is formed into a green sheet, which is printed with a paste comprising a Ni oxide, an organic binder and an organic solvent to form a patterned film. A desired number of the green sheets are laminated, heated and pressed to prepare a laminate. The laminate is cut into a desired size, heated in air at a temperature not initiating the combustion of the composition for burning the binder, heated in a reducing atmosphere for reducing the Ni oxide into the metal and subsequently calcined in a N2 atmosphere heated at a temperature below the melting point of the Ni form densifying the composition and the metal to provide a laminated ceramic capacitor. |
