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Liquid-liquid phase transition in supercooled yttria-alumina


Reference:

Barnes, A. C., Skinner, L. B., Salmon, P. S., Bytchkov, A., Pozdnyakova, I., Farmer, T. O. and Fischer, H. E., 2009. Liquid-liquid phase transition in supercooled yttria-alumina. Physical Review Letters, 103 (22), 225702.

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    Official URL:

    http://dx.doi.org/10.1103/PhysRevLett.103.225702

    Abstract

    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.

    Details

    Item Type Articles
    CreatorsBarnes, A. C., Skinner, L. B., Salmon, P. S., Bytchkov, A., Pozdnyakova, I., Farmer, T. O. and Fischer, H. E.
    DOI10.1103/PhysRevLett.103.225702
    DepartmentsFaculty of Science > Physics
    Publisher StatementSalmon_PRL_2009_103_225702.pdf: Copyright 2009 by the American Physical Society
    RefereedYes
    StatusPublished
    ID Code17377
    Additional InformationSee also: G. N. Greaves, M. C. Wilding, L. Hennet, D. Langstaff, F. Kargl, C. J. Benmore, and J. K. R. Weber, Comment on “Liquid-Liquid Phase Transition in Supercooled Yttria-Alumina”, Phys. Rev. Lett. 106, 119601 (2011) And: A. C. Barnes, L. B. Skinner, P. S. Salmon, A. Bytchkov, I. Pozdnyakova, T. O. Farmer, and H. E. Fischer, Barnes et al. Reply:, Phys. Rev. Lett. 106, 119602 (2011).

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