Skip to main content
SpringerLink
Log in

Inelastic and quasi-elastic light scattering in (NaCN)1−x(KCN)x quadrupolar glasses

  • Original Contributions
  • Published:
Zeitschrift für Physik B Condensed Matter

Abstract

The elastic constantsc 11 andc 44, and the attenuation of longitudinal phonons along (100)-direction in (NaCN)1−x(KCN)x mixed crystals have been determined by brillouin spectroscopy in the temperature range fromT=10K−300K. Minima inc 44 (T) which determine the freezing tempratureT F in these orientational glasses appear at lower temperatures compared to neutron scattering results. The coupling of molecular reorientations to longitudinal phonons in NaCN-rich smaples shows up in dispersion effects inc 11 (T) and the appearence of a dynamical central peak nearT F .

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Binder, K., Young, A.P.: Rev. Mod. Phys.58, 801 (1986)

    Google Scholar 

  2. Loidl, A., Schräder, T., Böhmer, R., Knorr, K., Kjems, J.K., Born, R.: Phys. Rev. B34, 1238 (1986)

    Google Scholar 

  3. Schräder, T., Loidl, A., Vogt, T., Franck, V.: Physica B157 &158, 195 (1989)

    Google Scholar 

  4. Loidl, A.: Annu. Rev. Phys. Chem.40, 29 (1989)

    Google Scholar 

  5. Knorr, K.: Phys. Scr.T19, 531 (1987)

    Google Scholar 

  6. Michel, K.H., Naudts, J.: Phys. Rev. Lett.39, 212 (1977); idem J. Chem. Phys.67, 547 (1977)

    Google Scholar 

  7. Mock, R., Hillebrands, B., Sandercock, J.R.: J. Phys. E20, 656 (1987)

    Google Scholar 

  8. The monomode glass fiber was kindly provided by the Schott Glaswerke, Mainz (FRG)

  9. Albers, J.: Universität des Saarlandes, Saarbrücken, FRG

  10. We assume thex-dependence of the refractive indexn to be the weighted average between the corresponding values for NaCN and KCN

  11. Schräder, T., Loidl, A., Vogt, T.: Phys. Rev. B39, 6186 (1989)

    Google Scholar 

  12. Lüty, F., Ortiz-Lopez, J.: Phys. Rev. Lett.50, 1289 (1983)

    Google Scholar 

  13. Haussühl, S., Eckstein, J., Recker, K., Wallrafen, F.: Acta Crystallogr.A33, 847 (1977)

    Google Scholar 

  14. Vanderwal, J.J., Hu, Z., Walton, D.: Phys. Rev. B33, 5782 (1986)

    Google Scholar 

  15. Berret, J.F., Farkadi, A., Boissier, M., Pelous, J.: Phys. Rev. B39, 13451 (1989)

    Google Scholar 

  16. Hu, Z., Garland, C.W., Wells, A.: Phys. Rev. B40, 5757 (1989)

    Google Scholar 

  17. Feile, R., Loidl, A., Knorr, K.: Phys. Rev. B26, 6875 (1982)

    Google Scholar 

  18. Courtens, E., Vacher, R., Dagorn, Y.: Phys. Rev. B33, 7625 (1986)

    Google Scholar 

  19. Michel, K.H., Naudts, J. De Raedt, B.: Phys. Rev. B18, 648 (1978)

    Google Scholar 

  20. Michel, K.H., Naudts, J.: J. Chem. Phys.68, 217 (1978)

    Google Scholar 

  21. For a review on Brillouin scattering in molecular liquids see e.g.: Dil, J.G.: Rep. Prog. Phys.45, 285 (1982)

    Google Scholar 

  22. Byer, N.E., Sack, H.S.: Phys. Rev. Lett.17, 72 (1966)

    Google Scholar 

Download references

Author information

Author notes

  1. J. F. Berret

    Present address: Laboratoire de Sciences des Materiaux Vitreux (Unité Associée n° 1119), Université de Montpellier, France

Authors and Affiliations

  1. Institut für Physik, Universität Mainz, Postfach 3980, D-6500, Mainz, Federal Republic of Germany

    J. F. Berret & R. Feile

Authors
  1. J. F. Berret
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. R. Feile
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

U.A. 1119 is associated to the Centre National de la Recherche Scientifique

Rights and permissions

Reprints and permissions

About this article

Cite this article

Berret, J.F., Feile, R. Inelastic and quasi-elastic light scattering in (NaCN)1−x(KCN)x quadrupolar glasses. Z. Physik B - Condensed Matter 80, 203–206 (1990). https://doi.org/10.1007/BF01357503

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01357503

Keywords

Search

Navigation