Fragility by elastic incoherent neutron scattering
S Magazù1, G Maisano, F Migliardo
1Dipartimento di Fisica and INFM, Università di Messina, P.O. Box 55, I-98166 Messina, Italy. smagazu@unime.it
Abstract:
The present work furnishes an operative definition for the fragility degree by using elastic incoherent neutron scattering (EINS). Such a definition is based on the relation between viscosity, a macroscopic quantity, and the atomic mean-square displacement, which refers to a nanoscopic property. This procedure has been used to analyze a set of glass-forming systems and it allows to obtain a linear dependence of the fragility parameter M, obtained by EINS, on the fragility parameter m, obtained by viscosity measurements.
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