Electrical Properties of Manganese‐Doped Titanium Dioxide

The electrical conductivity and Seebeck coefficient for TiO 2 doped with varying amounts of MnO 2 have been measured over the temperature range of 900°–1100°C. The Hall coefficient was also measured over the temperature range of 300°–500°C. The electrical conductivity and carrier density were found to decrease initially, go through a minimum at approximately x = 0.0001–0.001, and then increase with increasing content of MnO. For dopant levels above 0.01 at.%, p ‐type electrical conduction behavior was observed.