2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142286In this paper we report an extensive neutron diffraction investigation at high temperature on the BaCe0.80Y0.20O2.9 proton conducting material. Our results precisely define the structural evolution of the compound as a function of temperature which is from a monoclinic (room temperature) to a cubic (800C) structure. Neutron data have been correlated to calorimetric measurements (TGA and DSC) and conductivity properties of the material.33 pages, 13 FiguresMaterials Sciencetext