Characteristic physical–mechanical and high–temperature electric properties semicinductor ceramic based SnO2 with addition MnO2 and CuO

Ceramic semiconductor SnO2-based materials with MnO2 and CuO additives were synthesized at 1300 ºС and 1400 ºС. There has been carried out an investigation of the physical–mechanical and high–temperature electric properties. As a result, sintering of the material with MnO2 additive is shown to be improved at increasing firing temperature. The composition 96 % SnO2-2 % Sb2O3-2 % CuO made at the temperature 1300 ºС has the best electrophysical properties (its resistivity is 0.09 mOhm m). The resistivity of the 94 % SnO2-2 % Sb2O3-2 % CuO-2 % MnO2 composition in the high-temperature region is more by a factor of 3. The 96 % SnO2-2 % Sb2O3-2 % MnO2 composition has nonlinear voltage-currant characteristic, and hysteresis is present.