METALLIC ELECTROCONDUCTIVE 12Cao·7Al2O3 COMPOUND AND PROCESS FOR PRODUCING THE SAME

摘要

In an electride C12A7 provided by replacing free oxygen in 12CaO·7Al₂O₃ with electrons, a material having metallic electroconductivity and an electric conductivity of more than 5 × 10² S/cm at room temperature could not have been produced without difficulties.;An electride 12CaO·7Al2O3, which has metallic electroconductivity and has an electric conductivity of more than 5 × 102 S/cm at room temperature, can be produced by heat-treating titanium metal vapor and 12CaO-7Al2O3 single crystal, sinter, or thin film at a temperature above 600°C and below 1,450°C for less than 240 hours. Further, thermoelectric field electron release can also be realized using an electron release chip fabricated from the electride.