Structure, thermostability and magnetic properties of cubic Ce2−xTi2O7 pyrochlore obtained via sol–gel preparation

We report a novel cubic Ce 2− x Ti 2 O 7 compound prepared via the sol–gel method. There is an 18% vacancy of Ce ions in the as-prepared samples. The lattice defects may favor the transformation of Ce valence from +4 to +3, and a weak magnetic ordering state emerges up to 400 K.