Journal of Materials Science

, Volume 21, Issue 2, pp 625–629

Pressure-induced polymorphous crystallization in bulk Si20Te80 glass

  • S. Asokan
  • E. S. R. Gopal
  • G. Parthasarathy


The effect of pressure on the electrical resistivity of bulk Si20Te80 glass has been studied up to a pressure of 8 GPa. A discontinuous transition occurs at a pressure of 7 GPa. The X-ray diffraction studies on the pressure quenched sample show that the high pressure phase is crystalline with hexagonal structure (c/a = 1.5). On heating, the high pressure hexagonal phase has on exothermic decomposition atT = 586 K into two crystalline phases, which are the stable phases tellurium and SiTe2 obtained by simple heating of the glass.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    N. F. Mott andE. A. Davis, in “Electronic Processes in Non-Crystalline Materials” (Clarendon Press, Oxford, 1979).Google Scholar
  2. 2.
    S. Minomura, in “Amorphous Semiconductor Techniques and Devices”, edited by Y. Hamakawa (Ohm*, North-Holland, 1982) P. 245.Google Scholar
  3. 3.
    G. Parthasarathy, K. J. Rao andE. S. R. Gopal,Phil. Mag. B50 (1984) 335.Google Scholar
  4. 4.
    G. Parthasarathy, A. K. Bandyopadhyay, S. Asokan andE. S. R. Gopal,Solid State Commun. 51 (1984) 195.Google Scholar
  5. 5.
    M. V. N. Prasad, G. Parthasarathy, S. Asokan andE. S. Gopal,Pramana 23 (1984) 31.Google Scholar
  6. 6.
    G. Parthasarathy, A. K. Bandyopadhyay, S. Asokan andE. S. R. Gopal,ibid. 23 (1984) 17.Google Scholar
  7. 7.
    A. A. Andreev, M. S. Ablova, V. C. Podkhalyuzin, Z. A. Maslova andB. T. Mellelch,Sov. J. Glass Phys. Chem. 5 (1979) 334.Google Scholar
  8. 8.
    S. Asokan, G. Parthasarathy andE. S. R. Gopal,J. Mater. Sci. Lett. 4 (1985) 502.Google Scholar
  9. 9.
    A. K. Bandyopadhyay, A. V. Nalini, E. S. R. Gopal andS. V. Subramanyam,Rev. Sci. Instrum. 51 (1980) 136.Google Scholar
  10. 10.
    G. Parthasarathy andE. S. R. Gopal,Bull. Mater. Sci. 6 (1984) 231.Google Scholar
  11. 11.
    S. Sakai andJ. D. Mackenzie,J. Non-Cryst. Solids 1 (1969) 107.Google Scholar
  12. 12.
    C. T. Wu andH. L. Luo,ibid. 18 (1975) 21.Google Scholar
  13. 13.
    G. Parthasarathy andE. S. R. Gopal,J. Mater. Sci. Lett. 3 (1984) 756.Google Scholar
  14. 14.
    K. J. Rao, G. Parthasarathy, B. G. Rao andE. S. R. Gopal,Mater. Res. Bull. 19 (1984) 1221Google Scholar
  15. 15.
    D. Lazarus andN. H. Nachtrieb, in “Solids Under Pressure”, edited by W. Paul and D. M. Warschauer (McGraw Hill, New York, 1963) p. 43.Google Scholar
  16. 16.
    N. H. Nachtrieb, J. A. Weil, E. Catalano andA. W. Lawson,J. Chem. Phys. 20 (1952) 1189.Google Scholar
  17. 17.
    L. A. Girifalco, in “Metallurgy at High Pressures and High Temperatures”, edited by K. A. Gschneidner, M. T. Hepworth and N. A. D. Parlee (Gordon and Breach, New York, 1964) p. 260.Google Scholar
  18. 18.
    D. Lazarus, in “Solid State Physics Advances in Research Applications”, edited by F. Seitz and D. Turnbull (Academic Press, New York, 1960) Vol. 10, p. 71.Google Scholar
  19. 19.
    R. M. Emrick,Phys. Rev. 122 (1961) 1720.Google Scholar
  20. 20.
    D. Lazarus, in Proceedings of the International Conference DIMETA-82, Diffusion in Metals and Alloys, Tihany, Hungary, September 1982, edited by F. J. Kedves and D. L. Beke (Trans. Tech. Publications, Switzerland, 1983) p. 134.Google Scholar
  21. 21.
    M. Beyeler andY. Adda, in “Physics of Solids at High Pressures”, edited by C. T. Tomizuka and R. M. Emrick (Academic Press, New York, 1965) p. 349.Google Scholar
  22. 22.
    S. D. Gertstriken andM. P. Pryanishnikov,Phys. Metals Metall. 10 (1960) 134.Google Scholar
  23. 23.
    B. Y. Pines andF. Syrenko,J. Mater. Sci. 3 (1968) 80.Google Scholar
  24. 24.
    G. L. Kulcinski,Phys. Rev. 179 (1969) 676, and the references therein.Google Scholar
  25. 25.
    Z. Nishiyama, in “Martensitic Transformations”, edited by M. E. Fine, M. Meshii and C. M. Wayman (Academic Press, New York, 1978) p. 263.Google Scholar
  26. 26.
    R. A. Stager andH. G. Drickamer,Phys. Rev. 132 (1963) 124.Google Scholar
  27. 27.
    S. T. Lakshmikumar, V. C. Padaki, R. M. Mallya andE. S. R. Gopal,J. Non-Cryst. Solids 46 (1981) 33.Google Scholar
  28. 28.
    R. T. Johnson Jr andR. K. Quinn,ibid. 28 (1978) 273.Google Scholar
  29. 29.
    G. N. Greaves, S. R. Elliott andE. A. Davis,Adv. Phys. 28 (1979) 49.Google Scholar
  30. 30.
    J. W. Christian, in “The Theorv of Phase Transformations in Metals and Alloys” (Pergamon Press, Oxford, 1965) p. 802.Google Scholar
  31. 31.
    M. Tenhover, M. A. Hazle, R. K. Grasselli andC. W. Tompson,Phys. Rev. B28 (1983) 4608.Google Scholar
  32. 32.
    V. Köster andU. Herold, in “Glassy Metals”, edited by H. J. Güntherodt and H. Beek (Springer-Verlag, New York, 1981) p. 227.Google Scholar
  33. 33.
    G. Parthasarathy, A. K. Bandyopadhyay, E. S. R. Gopal andG. N. Subbanna,J. Mater. Sci. Lett. 3 (1984) 97.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1986

Authors and Affiliations

  • S. Asokan
    • 1
  • E. S. R. Gopal
    • 1
  • G. Parthasarathy
    • 2
  1. 1.Department of PhysicsIndian Institute of ScienceBangaloreIndia
  2. 2.Instrumentation and Services UnitIndian Institute of ScienceBangaloreIndia

Personalised recommendations