Structural heterogeneity and medium-range order in ZrxCu100-x metallic glasses
| Title | Structural heterogeneity and medium-range order in ZrxCu100-x metallic glasses |
| Publication Type | Journal Article |
| Year of Publication | 2009 |
| Authors | Li M, Wang CZ, Hao SG, Kramer MJ, Ho KM |
| Journal Title | Physical Review B |
| Volume | 80 |
| Pages | 184201 |
| Date Published | 11/01 |
| ISBN Number | 1098-0121 |
| Accession Number | ISI:000272310900051 |
| Keywords | alloys, ATOMIC PACKING, copper alloys, GEOMETRY, glass structure, LIQUIDS, metallic glasses, model, molecular dynamics method, molecular-dynamics, total-energy calculations, transition, x-ray diffraction, zirconium alloys |
| Abstract | Realistic three-dimensional atomistic structures of ZrxCu100-x (x=35,50) bulk metallic glasses are constructed using a combination of x-ray diffraction experiment and computational modeling. A cluster correlation method is developed to analyze the medium-range order in amorphous systems. We show that the glass systems consist of a stringlike backbone network formed by icosahedral clusters and a liquidlike structure filling in the remaining space. These findings are consistent with those obtained from our independent classical molecular-dynamics studies with embedded-atom method potential for ZrCu system. Such a heterogeneous structure provides a fundamental structural perspective of dynamical heterogeneity and glass formation. |
| URL | <Go to ISI>://000272310900051 |
| DOI | 10.1103/Physrevb.80.184201 |
