Pressure variation of melting temperatures of alkali halides

Research output: Contribution to journalArticle

Abstract

The melting temperatures of alkali halides (LiCl, LiF, NaBr, NaCl, NaF, NaI, KBr, KCl, KF, KI, RbBr, RbCl, RbI and CsI) have been evaluated over a wide range of pressures. The solid–liquid transition of alkali halides is of considerable significance due to their huge industrial applications. Our formalism requires a priori knowledge of the bulk modulus and the Grüneisen parameter at ambient conditions to compute (Formula presented.) at high pressures. The computed values are in very good agreement with the available experimental results. The formalism can satisfactorily be used to compute (Formula presented.) at high pressures where the experimental data are scanty. Most of the melting curves ((Formula presented.) versus (Formula presented.)) exhibit nonlinear variation with increasing pressure having curvatures downward and exhibit a maximum in some cases like NaCl, RbBr, RbCl and RbI. The values of (Formula presented.) and (Formula presented.) corresponding to the maxima of the curves are given.

Original languageEnglish
JournalInternational Journal of Modern Physics B
DOIs
Publication statusAccepted/In press - 2016

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alkali halides
melting
temperature
formalism
curves
bulk modulus
curvature

Keywords

  • Alkali halides
  • bulk modulus
  • Grüneisen parameter
  • melting law
  • phase transformation

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

Cite this

@article{1e4ca7af908d410fa6631ff82fe361fc,
title = "Pressure variation of melting temperatures of alkali halides",
abstract = "The melting temperatures of alkali halides (LiCl, LiF, NaBr, NaCl, NaF, NaI, KBr, KCl, KF, KI, RbBr, RbCl, RbI and CsI) have been evaluated over a wide range of pressures. The solid–liquid transition of alkali halides is of considerable significance due to their huge industrial applications. Our formalism requires a priori knowledge of the bulk modulus and the Gr{\"u}neisen parameter at ambient conditions to compute (Formula presented.) at high pressures. The computed values are in very good agreement with the available experimental results. The formalism can satisfactorily be used to compute (Formula presented.) at high pressures where the experimental data are scanty. Most of the melting curves ((Formula presented.) versus (Formula presented.)) exhibit nonlinear variation with increasing pressure having curvatures downward and exhibit a maximum in some cases like NaCl, RbBr, RbCl and RbI. The values of (Formula presented.) and (Formula presented.) corresponding to the maxima of the curves are given.",
keywords = "Alkali halides, bulk modulus, Gr{\"u}neisen parameter, melting law, phase transformation",
author = "Sayyadul Arafin and Singh, {Ram N.}",
year = "2016",
doi = "10.1142/S021797921750031X",
language = "English",
journal = "International Journal of Modern Physics B",
issn = "0217-9792",
publisher = "World Scientific Publishing Co. Pte Ltd",

}

TY - JOUR

T1 - Pressure variation of melting temperatures of alkali halides

AU - Arafin, Sayyadul

AU - Singh, Ram N.

PY - 2016

Y1 - 2016

N2 - The melting temperatures of alkali halides (LiCl, LiF, NaBr, NaCl, NaF, NaI, KBr, KCl, KF, KI, RbBr, RbCl, RbI and CsI) have been evaluated over a wide range of pressures. The solid–liquid transition of alkali halides is of considerable significance due to their huge industrial applications. Our formalism requires a priori knowledge of the bulk modulus and the Grüneisen parameter at ambient conditions to compute (Formula presented.) at high pressures. The computed values are in very good agreement with the available experimental results. The formalism can satisfactorily be used to compute (Formula presented.) at high pressures where the experimental data are scanty. Most of the melting curves ((Formula presented.) versus (Formula presented.)) exhibit nonlinear variation with increasing pressure having curvatures downward and exhibit a maximum in some cases like NaCl, RbBr, RbCl and RbI. The values of (Formula presented.) and (Formula presented.) corresponding to the maxima of the curves are given.

AB - The melting temperatures of alkali halides (LiCl, LiF, NaBr, NaCl, NaF, NaI, KBr, KCl, KF, KI, RbBr, RbCl, RbI and CsI) have been evaluated over a wide range of pressures. The solid–liquid transition of alkali halides is of considerable significance due to their huge industrial applications. Our formalism requires a priori knowledge of the bulk modulus and the Grüneisen parameter at ambient conditions to compute (Formula presented.) at high pressures. The computed values are in very good agreement with the available experimental results. The formalism can satisfactorily be used to compute (Formula presented.) at high pressures where the experimental data are scanty. Most of the melting curves ((Formula presented.) versus (Formula presented.)) exhibit nonlinear variation with increasing pressure having curvatures downward and exhibit a maximum in some cases like NaCl, RbBr, RbCl and RbI. The values of (Formula presented.) and (Formula presented.) corresponding to the maxima of the curves are given.

KW - Alkali halides

KW - bulk modulus

KW - Grüneisen parameter

KW - melting law

KW - phase transformation

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