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Crystallization of Se-Te glasses in ultrasonic field

E. A. CHECHETKINA1,* , E. V. KISTEREV1, E. B. KRYUKOVA2, A. I. VARGUNIN1

Affiliation

  1. Institute of General and Inorganic Chemistry of Russian Academy of Sciences, Moscow, Russia
  2. Institute of General Physics of Russian Academy of Sciences, Moscow, Russia

Abstract

The Se100-xTex (x = 0-10 at.%) glasses were crystallized in several ways: (1) by a long-term aging at room temperature, (2) by heating at about the glass transition temperature, and (3) by simultaneous heating and treatment in ultrasonic field. Measuring of optical transmission in the range of 400-1000 cm-1 was used as a non-destructive method sensitive to initial stages of crystallization. By means of removing of the surface layer with the following re-measurement of transparency one can evaluate the nucleation heterogeneity; it is shown that the most homogeneous ceramics is formed in the low-Te region (1%Te and 2%Te) while pure Se and high-Te glasses (0%, 5%, 10%Te) tend to the surface nucleation. Ultrasonic treatment reveals new effects of optical anisotropy and enlightenment. The results are discussed from synergetic point of view using the notions about alternative hypervalence bonds and their self-organization in the form of bond wave..

Keywords

Crystallization of glass, Chalcogenide glass-ceramics, Ultrasonic treatment, IR spectra, Anisotropic effects in glass, Self-organization.

Submitted at: July 5, 2009
Accepted at: Dec. 10, 2009

Citation

E. A. CHECHETKINA, E. V. KISTEREV, E. B. KRYUKOVA, A. I. VARGUNIN, Crystallization of Se-Te glasses in ultrasonic field, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 12, pp. 2029-2034 (2009)