Research activity in the field of the synthesis and characterization of new inorganic materials, specially metal oxides. He has been involved in the preparation and study of materials with unusual electronic and magnetic properties, such as metal-insulator transitions, superconductivity or colossal magnetoresistance. In Grenoble he gained expertise in neutron diffraction techniques applied to the determination of crystal and magnetic structures. At present, he works at the high pressure preparation of transition metal oxides in unusual valence states, with structures related to perovskite (for instance RNiO3 oxides) and pyrochlore (derived of Tl2Mn2O7). More than 160 publications in international journals (list enclosed), and 50 communications in national and international symposia on Solid State Chemistry, Inorganic Chemistry, Materials Science, Crystallography, Synchrotron and Neutron Diffraction, Magnetism, Superconductivity and Colossal Magnetoresistance.