| 摘要 |
PURPOSE:To provide the subject composition having a high dielectric constant, a low dielectric loss factor and improved reliability without producing any semiconductor even when sintered under a low oxygen fractional pressure by adding MnO2, Y2O3 and Yb2O3 to a BaTiO3 complex oxide one part of whose Ti is substituted with Zr. CONSTITUTION:MnO2, Y2O3, Yb2O3 and, if necessary, 0.05-1mol% of Dy2O3 and/or Tl2O and 0.1-2mol% of NiO and/or Co2O3 are compounded with a BaTiO3 complex oxide to provide a dielectric porcelein 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 plasticizer and the prepared slurry is spread into a filmy shape. The prepared green sheet is printed with a paste comprising a Ni oxide, an organic binder and an organic solvent to form a pattern film. A desired number of the green sheets are laminated. The prepared laminated is cut in 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 Ni, burnt in a N2 atmosphere heated to a temperature below the melting point of the Ni for densifying the composition and the metal to provide a laminated ceramic capacitor. |
