Thermal properties of Sr0,3 Ba0,7Ti1-yZryO3 ferroelectric ceramics: Dependence on sample’s porosity S. García, E. Marín, O. Delgado-Vasallo, J. Portelles, G. Peña Rodríguez, A. Calderón, E. Martínez et J.M. Siqueiros J. Phys. IV France, 125 (2005) 309-311 DOI: 10.1051/jp4:2005125074