Effect of lithium ion irradiation on the glass transition kinetics of Se₉₈In₂ chalcogenide glass

Abstract

Glass transition kinetics in glassy Se₉₈In₂ alloy is studied using differential scanning calorimetry under two different conditions. In the first condition, normal samples of the present glass are used. In the second condition, the ion-irradiated samples are used to see the effect of ionic irradiation on the glass transition kinetics of present alloy. For this high energetic beam (50 MeV) of lithium ions is used. After the ion irradiation on the glass, drastic changes in kinetic parameters of glass transition are observed. The results are explained by the model developed by Kastner et al. (Valence-alternation model for localized gap states in lone-pair semiconductors, Phys. Rev. Lett. 37 (1976), pp. 1504–1507).

Keywords:

• chalcogenides
• amorphous materials
• differential scanning calorimetry
• defects

Acknowledgements

One of the author (KS) is grateful to the Council of Scientific and Industrial Research (CSIR), New Delhi (India) for providing the financial support. The authors thank the Nuclear Science Centre (NSC), New Delhi for providing ion beam facility for irradiation work.