The thermal expansion of glasses Ge<sub>x</sub>As</sub>40-x</sub>Se<sub>60</sub>

Authors

  • В. С. Біланич Uzhhorod National University, Ukraine
  • І. В. Боднарь Belarusian State University of Informatics and Radioelectronics, Belarus
  • В. Б. Онищак Uzhhorod National University, Ukraine
  • І. М. Різак National Aerospace University „Kharkiv Aviation Institute”, Ukraine
  • В. М. Різак Uzhhorod National University, Ukraine

DOI:

https://doi.org/10.24144/2415-8038.2010.28.52-56

Keywords:

Chalcogenide glass, Thermal expansion, Dilatometry, Anharmonicity

Abstract

The thermal expansion of glasses GeхAs40-хSe60 is investigated with use the vertical quartz dilatometer in the temperature range 80-550 K is investigated. The temperature ranges of the strong increase the coefficient of linear expansion α of these materials and spacing stabilization are found. The concentration transformation of the dependences α(T) are interpreted on the basis of structural changes in the structure of the grid of glasses of Ge-As-Se. It is shown, that with increasing dimension of the structural glass network the anharmonicity of the thermal vibrations of atoms decreases.

References

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Published

2010-12-31

Issue

Vol. 28 (2010)

Section

Статті

License

Copyright (c) 2010 Scientific Herald of Uzhhorod University.Series Physics

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