It is shown that fragility of supercooled metallic liquids correlates with the Poisson's ratio of the respective metallic glasses. However, the correlation differs from that found previously for simple nonmetallic glass formers [V. N. Novikov and A. P. Sokolov, Nature 431, 961 (2004)]. The observed difference is assigned to the contribution of the free electron gas to the bulk modulus in metallic glasses.
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Novikov et al. (2006) studied this question.
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