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MM: Fachverband Metall- und Materialphysik

MM 34: Liquid and Amorphous Metals I

MM 34.1: Vortrag

Mittwoch, 25. März 2009, 14:45–15:00, IFW D

On systematics of the atomic structure of liquid and amorphous elements along the periodic table — •Peter Häussler — Chemnitz University of Technology, Institute of Physics, 09107 Chemnitz

Over many years we systematically studied structure formation at very early stages, within the amorphous state. This state, as well as the liquid one are the precursors of any crystalline state. But, both are not really disordered, instead show a well defined spherically-periodic order (SPO), in the mean around any atom. This order can be seen as a precursor of planar order which is expressed by Bloch’s theorem. The SPO is an effect of a self-organizing resonance between global subsystems as there are all the valence electrons on one side, and the forming static structure on the other. We learned that both subsystems may adjust to eachother for an optimal phase stability.

Here we report, starting with hydrogen (Z=1), on systematics in the static atomic structure of liquid and amorphous elements all along the Periodic Table of the Elements, up to bismuth (Z=83), highers are mostly unknown. With the Resonance Model we are able to explain major structural features of all the elements, independent whether they are metallically, covalently or van-der-Waals-like bonded, of atomical or molecular type. Main features of unknown structures as for e.g. liquid W, Ta, Mo can be predicted.