Title:
【発明の名称】粒界型半導体性磁器コンデンサー
Document Type and Number:
Japanese Patent JP2971689
Kind Code:
B2
Abstract:
A composition for an intergranular insulation type semiconductive ceramic capacitor essentially consisting of 1 mole of SrTiO3, 0.005 mole to 0.012 mole of TiO2, and 0.003 mole to 0.006 mole of a quinquevalent ion oxide selected from a group consisting of Nb2O5, Ta2O5, Sb2O5 and the mixture thereof. An intergranular insulation type semiconductive ceramic capacitor is made by sintering a ceramic body made of the composition at a temperature of not less than 1,500 DEG C. in the atmosphere, to form a sintered body having a liquid phase at its grain boundaries, and cooling the sintered body so that the liquid phase forms an intergranular insulating layer. The intergranular insulation type semiconductive ceramic capacitor exhibits a dielectric constant of not less than 40,000 and an insulation resistance of not less than 109 OMEGA .
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Inventors:
KIN JUNKO
RI BYONSAN
KIN SHOKEI
GO YASUNARI
KIN KUSU
RI BYONSAN
KIN SHOKEI
GO YASUNARI
KIN KUSU
Application Number:
JP35473492A
Publication Date:
November 08, 1999
Filing Date:
December 17, 1992
Export Citation:
Assignee:
KANKOKU KAGAKU GIJUTSU KENKYUSHO
International Classes:
H01B3/12; H01G4/12; (IPC1-7): H01G4/12; H01G4/12; H01B3/12
Attorney, Agent or Firm:
Hajime Tsukuni (1 person outside)