Breakdown of Stokes–Einstein relation in the supercooled liquid state of phase change materials [Phys. Status Solidi B 249, No. 10, 1880–1885 (2012)]

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Errata

This article corrects:

  1. Breakdown of Stokes–Einstein relation in the supercooled liquid state of phase change materials Volume 249, Issue 10, 1880–1885, Article first published online: 21 August 2012

Abstract

Values of the melting temperature at normal pressure equation image, of the slope of the melting line, and of the activation energies for the diffusion coefficient and viscosity are corrected.

Few numbers in the paper 1 are wrong due to misprints. The melting temperature can be computed in two ways: (i) by including the van der Waals (vdW) contribution to the equation of state of the liquid and the crystal and to the free energy of both phases or (ii) by including the vdW contribution to the equation of state of the liquid only. In case (i) the transition pressure at the selected temperature equation image K is –0.05 GPa, the slope of the melting line dequation image/dequation image is 56 K GPaequation image and the melting temperature at normal pressure is equation image K. In case (ii) the transition pressure at equation image K is equation image0.44 GPa, the slope of the melting line dequation image/dequation image is 58 K GPaequation image and the melting temperature at normal pressure is equation image K. The data in Fig. 1 are correct but the corresponding activation energies reported in the text are wrong. The activation energy for the diffusion coefficient equation image is equation image eV and not 0.220 eV. The activation energy for the viscosity equation image obtained by fitting equation image as a linear function of equation image is equation image eV and not 0.17 eV. Note that by fitting equation image as a linear function of equation image, consistently with the Stokes–Einstein relation, we obtain an activation energy of equation image eV.

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