Liquid-liquid transitions, crystallization and long range fluctuations in supercooled yttrium oxide-aluminium oxide melts

GREAVES, G. N., WILDING, Martin, FEARN, S., KARGL, F., HENNET, L., BRAS, W., MAJERUS, O. and MARTIN, C. M. (2009). Liquid-liquid transitions, crystallization and long range fluctuations in supercooled yttrium oxide-aluminium oxide melts. Journal of Non-Crystalline Solids, 355 (10-12), 715-721.

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Abstract

Employing small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS) combined with laser-heated aerodynamic levitation has enabled different transitions in supercooled yttrium oxide–aluminium oxide to be distinguished. These include liquid–liquid phase transitions as well as high temperature crystallization for different compositions. Prerequisites for avoiding crystallization in order to reveal polyamorphic phase separation in the supercooled state are established. We also show how the rise in SAXS intensity at low wavevectors can be used to identify correlation distances in long range fluctuations in high temperature melts. These distances appear to scale with melt viscosity and to extend temporarily during liquid–liquid transitions.

Item Type:	Article
Additional Information:	21st International Congress on Glass and Entropy, Trencin, SLOVAKIA, JUN 25-27, 2007
Research Institute, Centre or Group - Does NOT include content added after October 2018:	Materials and Engineering Research Institute > Engineering Research
Departments - Does NOT include content added after October 2018:	Faculty of Science, Technology and Arts > Department of Engineering and Mathematics
Identification Number:	https://doi.org/10.1016/j.jnoncrysol.2009.01.030
Page Range:	715-721
Depositing User:	Martin Wilding
Date Deposited:	03 Jul 2018 15:39
Last Modified:	18 Mar 2021 11:45
URI:	https://shura.shu.ac.uk/id/eprint/21489

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