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

Abstract

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.

Authors:
; ;  [1];  [2];  [3]
  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)
Publication Date:
OSTI Identifier:
21260237
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1092; Journal 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); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Greaves, G Neville, Wilding, Martin C, Vu Van, Quang, Majerus, Odile, and Hennet, Louis. Characterising density fluctuations in liquid yttria aluminates with small angle x-ray scattering. United States: N. p., 2009. Web. doi:10.1063/1.3086239.
Greaves, G Neville, Wilding, Martin C, Vu Van, Quang, Majerus, Odile, & Hennet, Louis. Characterising density fluctuations in liquid yttria aluminates with small angle x-ray scattering. United States. https://doi.org/10.1063/1.3086239
Greaves, G Neville, Wilding, Martin C, Vu Van, Quang, Majerus, Odile, and Hennet, Louis. 2009. "Characterising density fluctuations in liquid yttria aluminates with small angle x-ray scattering". United States. https://doi.org/10.1063/1.3086239.
@article{osti_21260237,
title = {Characterising density fluctuations in liquid yttria aluminates with small angle x-ray scattering},
author = {Greaves, G Neville and Wilding, Martin C and Vu Van, Quang and Majerus, Odile and Hennet, Louis},
abstractNote = {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.},
doi = {10.1063/1.3086239},
url = {https://www.osti.gov/biblio/21260237}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1092,
place = {United States},
year = {Thu Jan 29 00:00:00 EST 2009},
month = {Thu Jan 29 00:00:00 EST 2009}
}