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AsxSe100-x system (0 ≤ x ≤ 16) studied by StepScan DSC and Raman spectroscopy

J. HOLUBOVÁ1,* , Z. ČERNOŠEK1, E. ČERNOŠKOVÁ2

Affiliation

  1. Department of General and Inorganic Chemistry, University of Pardubice, nám. Legii 565, CZ-532 10 Pardubice, Czech Republic
  2. Joint Laboratory of Solid State Chemistry of Institute of Macromolecular Chemistry of Czech Academy of Sciences and University of Pardubice, Studentská 84, CZ-532 10 Pardubice, Czech Republic

Abstract

Thermal properties of glassy AsxSe100-x system (x = 0, 1, 2, 4, 8, 16) were studied by means of novel calorimetric method StepScan DSC. This method allows separating both reversible (fast) and kinetic (slow) processes. The glass transition temperature, independent of thermal history of glass, was determined from reversible part of StepScan DSC record. The Raman spectra of glasses studied are discussed, especially the assignment of band in the high-energy part of spectrum in the range 200-300 cm-1. The attention was also focused on the crystallization of undercooled melts of this system..

Keywords

StepScan DSC, Selenium, As-Se system, Glass transition, Raman spectroscopy.

Submitted at: Jan. 23, 2007
Accepted at: July 15, 2007

Citation

J. HOLUBOVÁ, Z. ČERNOŠEK, E. ČERNOŠKOVÁ, AsxSe100-x system (0 ≤ x ≤ 16) studied by StepScan DSC and Raman spectroscopy, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 7, pp. 1979-1984 (2007)