| 摘要 |
PROBLEM TO BE SOLVED: To form internal electrodes comprising 100% Ag and increase B constant even in sintering at temperatures <=960 deg.C under atmospheric conditions. SOLUTION: The material is a composite sintered compact 11 of a semiconducting ceramic material having a spinel structure comprising >=2 kinds of metal oxides selected from MnO, CoO, NiO, CuO, Fe2O3, and Al2O3 and a magnetic ceramic material comprising Ni-Zn-Cu-based ferrite. The semiconducting ceramic material is powder calcined or sintered at temperatures from 100 deg.C lower than its sintering temperature to its sintering temperature and the magnetic ceramic material is powder calcined at 700-800 deg.C. The composite material contains the calcined magnetic ceramic powder of 40-60 vol.% as a matrix component and the calcined or sintered semiconducting ceramic powder as aggregate for the rest. |
