COMPOSITION DEPENDENT HIGH TEMPERATURE INTERNAL FRICTION IN MgO (Al2O3)n SPINELS J. WOIRGARD, P. MAZOT et M. HALBWACKSJ. Phys. Colloques, 46 C10 (1985) C10-553-C10-556DOI: https://doi.org/10.1051/jphyscol:198510123