Electrical characterization and modelization of CaCu3Ti4O12 polycrystalline ceramics Chafe Cheballah, Zarel Valdez-Nava, Lionel Laudebat, Sophie Guillemet-Fritsch and Thierry Lebey Eur. Phys. J. Appl. Phys., 70 3 (2015) 30902 Published online: 24 June 2015 DOI: 10.1051/epjap/2015150063