Magnetic behavior in the series LaxY1−xTiO3

Single-phase products spanning the entire composition range LaTiO3YTiO3 were prepared. Magnetization-temperature data suggest a transition from negative Ti3+Ti3+ exchange interactions at the La-rich end to positive exchange interactions at the Y-rich end. The magnetic behavior of the intermediate compositions is complex and not well understood. Inverse susceptibility vs temperature data were fitted to a model including both a Curie-Weiss and temperature-independent term. This temperature-independent term scales linearly with La content. The electrical resistivity of single-crystal samples of La0.1Y0.9TiO3 and La0.2Y0.8TiO3 was measured in the range 225–300 K. These data are characteristic of an activated transport mechanism.