Swamy, V;
Muddle, BC;
Kuznetsov, A;
Dubrovinsky, LS;
McMillan, PF;
Prakapenka, VB;
Shen, G;
(2006)
Size-dependent pressure-induced amorphization in nanoscale TiO2.
Physical Review Letters
, 96
(13)
, Article 135702. 10.1103/PhysRevLett.96.135702.
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Abstract
We investigated the size-dependent high-pressure phase transition behavior of nanocrystalline anatase TiO2 with synchrotron x-ray diffraction and Raman spectroscopy to 45 GPa at ambient temperature. Pressure-induced amorphization results in a high-density amorphous (HDA) form when the starting crystallite size is <10nm. The HDA-TiO2 transforms to a low-density amorphous form at lower pressures. Harnessing the nanometer length scale thus provides a new window for experimental investigation of amorphization in poor glass formers and a synthesis route for new amorphous materials. © 2006 The American Physical Society.
| Type: | Article |
|---|---|
| Title: | Size-dependent pressure-induced amorphization in nanoscale TiO2 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.135702 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.96.135702 |
| Language: | English |
| Additional information: | © 2006 The American Physical Society |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1334040 |
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