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Updated: Jun 19, 2026

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction
Published on: May 20, 2018
Unusual compression behavior of anatase TiO2 nanocrystals
Varghese Swamy1, Alexei Y Kuznetsov, Leonid S Dubrovinsky
1Department of Materials Engineering, Monash University, Victoria 3800, Australia. varghese.swamy@eng.momnash.edu.au
Abstract:
The size-dependent stiffness variations in nanocrystalline anatase, a leading material for applications in photovoltaics, photocatalysis, photoelectrochromics, sensors, and optical coatings, were determined using in situ synchrotron x-ray diffraction and Raman scattering. An unusual, abrupt change in the compression curve at approximately 10 GPa and subtle breaks in the pressure shifts of the intense E(g) Raman band at approximately 10 and approximately 15 GPa have been correlated with approximately 2 A-scale disordering of nanocrystalline anatase structure that fully amorphizes under high compression.
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