Medium-range structural order in covalent amorphous solids

@article{Elliott1991MediumrangeSO,
  title={Medium-range structural order in covalent amorphous solids},
  author={Stephen R. Elliott},
  journal={Nature},
  year={1991},
  volume={354},
  pages={445-452}
}
  • S. Elliott
  • Published 12 December 1991
  • Materials Science
  • Nature
Despite their lack of long-range translational and orientational order, covalent amorphous solids can exhibit structural order over both short and medium length scales, the latter reaching to 20 Å or so. Medium-range order is difficult to measure experimentally and to interpret unambiguously, but a variety of techniques have allowed several types of characteristic structural ordering to be identified and their origin elucidated. 
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References

SHOWING 1-10 OF 79 REFERENCES
Structure of covalently bonded glass-forming melts: A full partial-structure-factor analysis of liquid GeSe2.
The first full partial-structure-factor analysis of molten GeSe 2 is made using the method of isotopic substitution in neutron diffraction. It is shown that the melt comprises roughlyequal numbers of
Atomic correlations and intermediate-range order in molten and amorphous GeSe2.
Interatomic potentials consisting of two-body and three-body covalent forces are proposed for GeSe/sub 2/. Using these in molecular-dynamics simulations, the nature of intermediate-range order is
Medium-range order in the cation distribution of a calcium silicate glass
Silicate glasses have conventionally been regarded as silicate frameworks in which cations are distributed at random. Neutron scattering from isotopically substituted samples allows correlations
Origin of the first sharp diffraction peak in the structure factor of covalent glasses.
  • Elliott
  • Physics
    Physical review letters
  • 1991
TLDR
Calculated FSDP positions of some covalent glasses agree well with experiment, and the anomalous temperature and pressure dependences of the FSDP can be understood in terms of density effects.
Structural Characterization of Non‐Oxide Chalcogenide Glasses using Solid State NMR
In spite of the long-standing importance of non-oxide chalcogenide glasses in infrared optics and semiconductor technology, concepts describing the structural principles governing glass formation in
Mössbauer Spectroscopy—A Rewarding Probe of Morphological Structure of Semiconducting Glasses
It has been fashionable to discuss the structure of stoichiometric melt-quenched network glasses in terms of chemically-ordered continuous random networks (CRN) since Zachariasen’s pioneering work on
...
1
2
3
4
5
...