Journal
PHYSICAL REVIEW LETTERS
Volume 105, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.205502
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Funding
- Division of Materials Science and Engineering, Office of Basic Energy Sciences, Department of Energy [DE-AC05-00OR-22725]
- U.S. Department of Energy (DOE), Office of Science [DE-AC02-06CH11357]
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When a stress is applied on a metallic glass it deforms following Hook's law. Therefore it may appear obvious that a metallic glass deforms elastically. Using x-ray diffraction and anisotropic pair-density function analysis we show that only about 3 4 in volume fraction of metallic glasses deforms elastically, whereas the rest of the volume is anelastic and in the experimental time scale deform without resistance. We suggest that this anelastic portion represents residual liquidity in the glassy state. Many theories, such as the free-volume theory, assume the density of defects in the glassy state to be of the order of 1%, but this result shows that it is as much as a quarter.
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