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Liquid-Liquid Phase Transition in Supercooled Yttria-Alumina

Adrian C. Barnes, Lawrie B. Skinner, Philip S. Salmon, Alexei Bytchkov, Irina Pozdnyakova, Thomas O. Farmer, and Henry E. Fischer
Phys. Rev. Lett. 103, 225702 – Published 23 November 2009

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)1x 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.

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  • Received 13 July 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.225702

©2009 American Physical Society

Authors & Affiliations

Adrian C. Barnes1, Lawrie B. Skinner1, Philip S. Salmon2, Alexei Bytchkov3, Irina Pozdnyakova4, Thomas O. Farmer1, and Henry E. Fischer5

  • 1H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL, United Kingdom
  • 2Department of Physics, University of Bath, Bath, BA2 7AY, United Kingdom
  • 3European Synchrotron Radiation Facility, 6 rue Jules Horowitz, BP 220, F-38043, Grenoble, France
  • 4CNRS-CEMHTI, University of Orleans, 1d avenue de la Recherche Scientifique, 45071, Orléans cedex 2, France
  • 5Institut Laue-Langevin, 6 rue Jules Horowitz, BP 156, F-38042, Grenoble, France

Comments & Replies

Comment on “Liquid-Liquid Phase Transition in Supercooled Yttria-Alumina”

G. N. Greaves, M. C. Wilding, L. Hennet, D. Langstaff, F. Kargl, C. J. Benmore, and J. K. R. Weber
Phys. Rev. Lett. 106, 119601 (2011)

Barnes et al. Reply:

A. C. Barnes, L. B. Skinner, P. S. Salmon, A. Bytchkov, I. Pozdnyakova, T. O. Farmer, and H. E. Fischer
Phys. Rev. Lett. 106, 119602 (2011)

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Vol. 103, Iss. 22 — 27 November 2009

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