**Effects of the Microstructure Induced by Sintering on the Dielectric Properties of Alumina**

Zarbout Kamel1, Moya Gérard2, Si Ahmed Abderrahmane2, Damamme Gilles3 and Kallel Ali1 *1Sfax University, LaMaCoP, BP 1171, Sfax 3000, 2Aix-Marseille University, Im2np, UMR-CNRS 6242, Marseille, 3Commissariat à l'Energie Atomique, DAM Ile-de-France, Bruyère-le-Châtel 1Tunisie 2,3France* 
