Effect of MCl (M = Na, K) addition on microstructure and electrical conductivity of forsterite Saloua El Asri, Hamid Ahamdane, Lahoucine Hajji, Mohamed El Hadri, Moulay Ahmed El Idrissi Raghni and Mohammed Mansori Eur. Phys. J. Appl. Phys., 92 1 (2020) 10901 Published online: 02 October 2020 DOI: 10.1051/epjap/2020200161