Structure formation of thin-film resistance composites based on alloyed tin dioxide

The nature of interaction between tin dioxide and some refractory borides during heat treatment of resistive composites in air is studied by differential thermal analysis and x-ray diffraction. The reaction products are β-Sn, metals and boron oxides. Addition of HfB2, ZrB2, and LaB6 to composites based on Sb-doped tin oxide result in a reduction of the film temperature coefficient of resistance.