Characterising density fluctuations in liquid yttria aluminates with small angle x-ray scattering

Journal Article · Thu Jan 29 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3086239· OSTI ID:21260237

Greaves, G Neville; Wilding, Martin C; Vu Van, Quang ^[1]; Majerus, Odile ^[2]; Hennet, Louis ^[3]

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1. Centre for Advanced Functional Materials and Devices Institute of Mathematics and Physics, Aberystwyth University, Aberystwyth SY23 3BZ (United Kingdom)
2. Ecole nationale Superieure de Chemie de paris, 11 rue Pierre et marie Curies, 75231, Paris (France)
3. CNRS-CRMHT, 1d avenue de la Rechereche Scietifique, 45071 Orleans cedex 9 (France)

Small angle x-ray scattering (SAXS) has been measured in the wavevector range 0.01<Q<1 A{sup -1} for supercooled yttria-alumina melts using a laser-heated aerodynamic furnace. SAXS intensity rises gradually with temperature reflecting density fluctuations deriving from isothermal compressibility. With decreasing Q a minimum is located close to 0.1 A{sup -1} at the foot of the inter-atomic structure factor, below which SAXS rises, suggesting scatter from longer range fluctuating volumes.

• OSTI ID: 21260237
• Journal Information: AIP Conference Proceedings, Vol. 1092, Issue 1; Conference: 6. international conference on synchrotron radiation in materials science, Campinas (Brazil), 20-23 Jul 2008; Other Information: DOI: 10.1063/1.3086239; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINATES
ALUMINIUM OXIDES
COMPRESSIBILITY
DENSITY
DENSITY FUNCTIONAL METHOD
FLUCTUATIONS
FURNACES
LASERS
SMALL ANGLE SCATTERING
STRUCTURE FACTORS
SYNCHROTRON RADIATION
X-RAY DIFFRACTION
YTTRIUM OXIDES