Berlin 2018 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 27: Poster Session I

MM 27.23: Poster

Dienstag, 13. März 2018, 18:30–19:45, Poster E

Interatomic interaction governed structural and dynamical evolution in La-based glasses and melts — •Zheng Wang and Konrad Samwer — I. Physikalisches Institut, Georg-August-Universität Göttingen,37077 Göttingen, Germany

Through systematic investigations on structural and dynamical properties of binary La-TM glass-forming alloys, the features of liquid states and the performances in the glasses are connected and found to be governed by the interatomic interactions. A relative loose packing in La-Cu systems from an observed positive excess volume could be the result of a combination of steep repulsion and anharmonic attraction of the potential. Based on the experimental determined potential features, properties of deformation units in glasses could be predicted from the dynamics of the melts, which also relate with the distinct relaxation behaviors. Our findings not only provide deeper insights into the glass-forming system property changes induced by interatomic interaction variations, but also shed light on designing desired metallic glasses from the characteristics of the melts.