Contribution to the study of the coexistence of phases tetragonal-rhombohedral in ceramic type PZT and general form: Pb [ZrxTi0,95-x(Mo1/3In2/3)0.05]O3M. Abbaa, Z. Necira, N. Abdessalem and A BoutarfaiaEPJ Web of Conferences, 29 (2012) 00001DOI: https://doi.org/10.1051/epjconf/20122900001