An interstitial pyrochlore formed by chemical intercalation of oxygen
Abstract
Oxygen is intercalated, using a solution-based route at ambient temperature, into a pyrochlore oxide, thus establishing a new class of pyrochlore-based interstitial solid solutions: the specific system studied is Ce2Zr2O7 and compositions in the range Ce2Zr2O7 +x, 0 < x < 0.36 are obtained; the structure of the most oxygen rich composition has been elucidated by powder neutron diffraction.