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Journal of Materials Science

, Volume 19, Issue 9, pp 3005–3012 | Cite as

Glass formation and crystallization in the GeSe2-Sb2Te3 system

  • S. SuriÑach
  • M. D. Baro
  • M. T. Clavaguera-Mora
  • N. Clavaguera
Papers

Abstract

The glass formation and crystallization of liquid-quenched (GeSe2)100-y/(Sb2Te3) y alloys was investigated by means of differential scanning calorimetry, X-ray diffraction and optical and scanning electron microscopy. By water quenching glasses are obtained from compositions in the range 5≲y≲30. Qualitative parametrization of glass-forming tendency gives, as best glass formers, alloys with y≅20. Crystallization on heating proceeds in one stage for glasses withy≲20 and in two stages for those with greater Sb2Te3 content. For compositions lying in the GeSe2 primary crystallization region crystals appear preferentially at the surface of the sample, but for the other compositions (24≲y≲30) the crystals emerge in the bulk and often develop in spherulitic or axialitic form.

Keywords

Polymer Microscopy Electron Microscopy Scanning Electron Microscopy Crystallization 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd 1984

Authors and Affiliations

  • S. SuriÑach
    • 1
  • M. D. Baro
    • 1
  • M. T. Clavaguera-Mora
    • 1
  • N. Clavaguera
    • 2
  1. 1.Termología, Facultad de CienciasUniversidad Autónoma de BarcelonaBellaterra (Barcelona)Spain
  2. 2.Física del Estado Sólido, Facultad de FísicaUniversidad de Barcelona, DiagonalBarcelona-28Spain

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