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Thermal stability of the amorphous system Ge20As14(SexS1−x)52I14

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Abstract

Results of thermal investigations of the amorphous five-component chalcogenide system Ge20As14(SexS1−x)52I14 are presented. Differential thermal analysis (DTA), derivative differential thermal analysis (DDTA), and dilatometry were employed to determine the temperatures of softening and partial crystallization of the samples. Thermal treatment of the samples at 1000°C and recording of the corresponding thermogravimetric (TG) and derivative thermogravimetric (DTG) curves allowed an elucidation of the full mechanism of their decomposition, which proceeds via seven characteristic phase transitions.

Zusammenfassung

Chalkogenidsystemes Ge20As14(SexS1−x)52I14 dargelegt. DTA, DDTA und Dilatometrie wurden zur Bestimmung des Erweichungspunktes und der Temperatur für eine partielle Kristalisation der Proben eingesetzt. Thermische Behandlung bei 1000°C und die Aufzeichnung der entsprechenden TG-und DTG-Kurven erlaubte es, ihren über sieben charakteristische Phasenumwandlungen verlaufenden Zersetzungsmechanismus voll zu klären.

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Authors and Affiliations

  1. Institute of Physics, Faculty of Sciences, University of Novi Sad, Yugoslavia

    M. I. Avramov, D. M. Petrović, S. R. Lukić & S. J. Skuban

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  1. M. I. Avramov
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  2. D. M. Petrović
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  3. S. R. Lukić
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  4. S. J. Skuban
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Avramov, M.I., Petrović, D.M., Lukić, S.R. et al. Thermal stability of the amorphous system Ge20As14(SexS1−x)52I14 . Journal of Thermal Analysis 44, 1203–1209 (1995). https://doi.org/10.1007/BF02547550

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  • DOI: https://doi.org/10.1007/BF02547550

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