Glass Physics and Chemistry

, Volume 38, Issue 3, pp 269–273 | Cite as

Thermal expansion coefficient and relaxation parameters of glasses in the system GaX2-GeX2-Sb2X3 (X = S, Se)

  • A. I. Gorbunov
  • S. K. Liav
  • A. S. Tverjanovich


The concentration behavior of the thermal expansion coefficient of glasses in the system GaX2-GeX2-Sb2X3 (X = S, Se) has been studied in two sections. Parameters characterizing the relaxation properties of the glasses have been calculated on the basis of the Tool-Narayanaswamy theory from experimental temperature dependences of the thermal expansion coefficient in the softening range. Temperature dependences of the viscosity have been calculated under the assumption of equal free activation energies for the relaxation and viscous flow.


chalcogenide glasses thermal expansion coefficient relaxation viscosity 


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© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • A. I. Gorbunov
    • 1
  • S. K. Liav
    • 2
  • A. S. Tverjanovich
    • 1
  1. 1.St. Petersburg State UniversitySt. Petersburg, PetrodvoretsRussia
  2. 2.National Taiwan University of Science and TechnologyTaipeiTaiwan

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