[Vibrational spectrum and XPS contrastive studies on pyrochlore-type oxygen-rich Ce2Zr2O8 and oxygen-defective Nd2Zr2O7 phases].

Pyrochlore-type oxygen-rich Ce2Zr2O8 phase was prepared successfully by graphite reduction method. With the oxygen[U8]-defective Nd2Zr2O7 substituting for the oxidized precursor phase CeZrO3.5+Δ was carried out the structure comparative analysis with Ce2Zr2O8.