Elastic properties of metastable Mo1 − xSix alloy thin films: A Brillouin light scattering study

► Characterization of the elastic properties of metastable Mo1-xSix alloy thin films for the whole composition range. ► Evidence of the phase transformation from the crystalline to the amorphous phase for a silicon concentration x = 0.19. ► Comparison with relationships between elastic and plastic properties of bulk metallic glass and covalent glassy materials. ► Evidence of the transition from the metallic glass to the covalent glass state above x = 0.5.