Abstract
Blundred et al. mentioned that under reducing conditions, the pyrochlores RE2Ti2O7 with larger lanthanide cations (RE = Sm, Eu) change their structure into perovskite RETiO3. In this study, we reduced the pyrochlore Eu2Ti2O7 by annealing in an evacuated tube with a metal hydride. According to the X-ray powder diffraction, the reduced sample has a perovskite structure, and TG measurements in air suggest the perovskite is deficient in oxygen. Furthermore, a considerable emission of hydrogen during heating under inert atmosphere was observed by TG-MS. This implies that at least in our case, this perovskite reported by Blundred et al. is in fact an oxyhydride, EuTiO3-xHx.
