Projects per year
Liquid and glassy oxide materials play a vital role in multiple scientific and technological disciplines, but little is known about the part played by oxygen-oxygen interactions in the structural transformations that change their physical properties. Here we show that the coordination number of network-forming structural motifs, which play a key role in defining the topological ordering, can be rationalized in terms of the oxygen-packing fraction over an extensive pressure and temperature range. The result is a structural map for predicting the likely regimes of topological change for a range of oxide materials. This information can be used to forecast when changes may occur to the transport properties and compressibility of, e.g., fluids in planetary interiors, and is a prerequisite for the preparation of new materials following the principles of rational design.
|Number of pages||4|
|Journal||Proceedings of the National Academy of Sciences of the United States of America|
|Early online date||30 Jun 2014|
|Publication status||Published - 15 Jul 2014|
- network structures
- oxygen packing
- oxide ion radius
- high pressure
- high temperature
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- 2 Finished
5/06/12 → 4/10/15
Project: Research council