Abstract
| Original language | English |
|---|---|
| Article number | 214204 |
| Number of pages | 5 |
| Journal | Physical Review B : Condensed Matter and Materials Physics |
| Volume | 93 |
| DOIs | |
| Publication status | Published - 22 Jun 2016 |
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Pressure-driven transformation of the ordering in amorphous network-forming materials. / Zeidler, Anita; Salmon, Philip.
In: Physical Review B : Condensed Matter and Materials Physics, Vol. 93, 214204, 22.06.2016.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Pressure-driven transformation of the ordering in amorphous network-forming materials
AU - Zeidler, Anita
AU - Salmon, Philip
PY - 2016/6/22
Y1 - 2016/6/22
N2 - The pressure-induced changes to the structure of disordered oxide and chalcogenide network-forming materials are investigated on the length scales associated with the first three peaks in measured diffraction patterns. The density dependence of a given peak position does not yield the network dimensionality, in contrast to metallic glasses where the results indicate a fractal geometry with a local dimensionality of ~5/2. For oxides, a common relation is found between the intermediate-range ordering, as described by the position of the first sharp diffraction peak, and the oxygen-packing fraction, a parameter that plays a key role in driving changes to the coordination number of local motifs. The first sharp diffraction peak can therefore be used to gauge when topological changes are likely to occur, events that transform network structures and their related physical properties.
AB - The pressure-induced changes to the structure of disordered oxide and chalcogenide network-forming materials are investigated on the length scales associated with the first three peaks in measured diffraction patterns. The density dependence of a given peak position does not yield the network dimensionality, in contrast to metallic glasses where the results indicate a fractal geometry with a local dimensionality of ~5/2. For oxides, a common relation is found between the intermediate-range ordering, as described by the position of the first sharp diffraction peak, and the oxygen-packing fraction, a parameter that plays a key role in driving changes to the coordination number of local motifs. The first sharp diffraction peak can therefore be used to gauge when topological changes are likely to occur, events that transform network structures and their related physical properties.
UR - http://dx.doi.org/10.1103/PhysRevB.93.214204
U2 - 10.1103/PhysRevB.93.214204
DO - 10.1103/PhysRevB.93.214204
M3 - Article
VL - 93
JO - Physical Review B : Condensed Matter and Materials Physics
JF - Physical Review B : Condensed Matter and Materials Physics
SN - 1098-0121
M1 - 214204
ER -