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    • 8. 发明专利
    • CERAMIC CAPACITOR AND ITS MANUFACTURE
    • JP2001006965A
    • 2001-01-12
    • JP17647399
    • 1999-06-23
    • UBE INDUSTRIES
    • KONO TAKASHIHASHIMOTO KAZUONISHIDA AKIO
    • H01G4/12C04B35/49H01B3/00H01B3/12H01G4/33
    • PROBLEM TO BE SOLVED: To improve the withstand voltage of a ceramic capacitor without sacrificing the dielectric constant of the capacitor, by forming a dielectric layer composed of a perovskite type oxide on a substrate by a hydrothermal synthesis method, and successively forming an insulating protective layer composed of a manganese oxide and an electrode on the dielectric layer. SOLUTION: A ceramic capacitor is manufacturing in such a way that a dielectric layer composed of a perovskite type oxide is formed on a substrate containing at least Ti element in its surface even in a small quantity by a hydrothermal synthesis method. The dielectric layer contains at least a dielectric layer composed of a perovskite type oxide expressed by a formula, ABO3 (where, A represents one or more elements selected out of Ca, Sr, Ba, and Pb and B represents Ti and/or Zr) and formed by a hydrothermal synthesis method. Then an insulating protective layer composed of a manganese oxide is formed on the dielectric layer. Finally, an upper electrode is formed on the manganese oxide layer by plating, sputtering, vapor deposition, baking, etc.