SiGe nanocrystals embedded in alumina and silica matrices for memory applications E. M. F. Vieira, J. Martín-Sánchez, S. Levichev, A. Parisini, M. Buljan, I. Capan, E. Alves, N. P. Barradas, O. Conde, S. Bernstorff, A. G. Rolo, A. Chahboun, M. J. M. Gomes COST Action: MP0901(NanoTP11 - MP901 Meeting 09-12 November-2011, International Center for Theoretical Physics, Trieste, Italy.