Liquid-liquid phase transition in supercooled yttria-alumina

A C Barnes, L B Skinner, Philip S Salmon, A Bytchkov, I Pozdnyakova, T O Farmer, H E Fischer

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The structure and thermal characteristics of aerodynamically levitated samples of yttria-alumina in the liquid, supercooled liquid and solid phases were explored in an extensive series of high energy x-ray diffraction, small angle neutron scattering, and pyrometric cooling measurements. Particular focus was placed on the compound (Y2O3)(x)(Al2O3)(1-x) with x=0.2 for which a liquid-liquid phase transition at a temperature of 1788 K has recently been reported. No structural or thermal signature in support of this metastable phase transition could be found.
Original languageEnglish
Article number225702
Number of pages4
JournalPhysical Review Letters
Issue number22
Early online date23 Nov 2009
Publication statusPublished - 27 Nov 2009


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