Efficient local atomic packing in metallic glasses and its correlation with glass-forming ability

TitleEfficient local atomic packing in metallic glasses and its correlation with glass-forming ability
Publication TypeJournal Article
Year of Publication2009
AuthorsMa D, Stoica AD, Wang XL, Lu ZP, Xu M, Kramer M
Journal TitlePhysical Review B
Volume80
Pages014202
Date Published07/01
ISBN Number1098-0121
Accession NumberISI:000268617100049
Keywordscopper alloys, cu-zr system, glass structure, mechanical-properties, medium-range order, metallic glasses, neutron diffraction, neutron-diffraction, pair distribution function, si allo, vitrification, x-ray diffraction, x-ray-diffraction, zirconium alloys
Abstract

We have probed local atomic structure of Zr-Cu metallic glasses using time-of-flight neutron and synchrotron x-ray diffraction techniques with high resolution. Our results provide evidence for a scheme of efficient local atomic packing where atomic clusters encompass multiple types of atoms in the first coordination shell. We also demonstrate experimental evidence of a strong correlation between the number of unlike atom bonds and the glass-forming ability. Our findings may provide insights into a broad range of scientific problems where efficient space filling by packing spheres is essential.

URL<Go to ISI>://000268617100049
DOI10.1103/Physrevb.80.014202