[en] The nuclear materials (glasses and ceramics) have been under investigation since decades to account their radiation resistivity, structural and chemical response through ion beam irradiation for the immobilization of HLWs from environment. But ceramics among which titanate based ones, known as SYNROCS, have been reported to be more advantageous over glasses due to their low solubility in water, resistant to radiation damage, high waste loading, high thermal and mechanical stability, and simple processing