Title:
【発明の名称】誘電体磁器組成物
Document Type and Number:
Japanese Patent JPS598923
Kind Code:
B2
Abstract:
A dielectric ceramic composition consists essentially of strontium titanate, magnesium titanate, bismuth oxide, titanium oxide, and lead oxide, these components being present in the following compositional proportion when expressed by the formulas, SrTiO3, MgTiO3, Bi2O3, TiO2 and Pb3O4, respectively: SrTiO3 30.0-60.0 wt % MgTiO3 2.0-32.0 wt % Bi2O3 10.0-34.0 wt % TiO2 3.0-15.0 wt % Pb3O4 2.0-20.0 wt % Pb3O4/MgTiO3 0.625-10.0 (weight ratio) The composition exhibits high permittivity, small dielectric loss, small dependency of permittivity on temperature, and high dielectric breakdown voltage in combination, so that it makes it possible to produce physically small capacitors with large capacity and high rating voltage. The process for production of the composition is characterized by the use of MgTiO3 and Pb3O4 as respective sources of magnesium and lead.
Inventors:
SAKABE YUKIO
Application Number:
JP13749277A
Publication Date:
February 28, 1984
Filing Date:
November 15, 1977
Export Citation:
Assignee:
MURATA MANUFACTURING CO
International Classes:
C04B35/46; C04B35/465; C04B35/475; H01B3/12; H01G4/12; (IPC1-7): H01B3/12; C04B35/46; H01G4/12