Electrical and magnetic properties of the Pr(2/3+x)TiO3 +/-gamma perovskite phase

The thermoelectric power, electrical resistivity, and magnetic susceptibili ty of the praseodymium titanium bronze phase Pr2/3+xTiO3 +/-y were measured for compositions in the range 0 less than or equal to x less than or equal to 1/3. The conductivity of the bronze was found to exhibit metallic behav ior between 77 and 450 K. The transport data were used to evaluate the elec tron mobility and Fermi energy. In the range 77-300 K, the magnetic suscept ibility of Pr2/3+xTiO3 +/-y consists two contributions - those from Pr3+ (a strong function of temperature) and Ti3+ (a weak function of temperature).