Advertisement

Neutron and X-Ray Inelastic Scattering by Lattice Vibrations

  • R. A. Cowley
Conference paper
Part of the The IBM Research Symposia Series book series (IRSS)

Abstract

Neutron and x-ray inelastic scattering measurements enable the frequencies and eigenvectors of the normal modes of vibration of crystals to be determined. The effects of the anharmonicity on these measurements are discussed. It is shown that they may give rise to both line shape and intensity anomalies, which may complicate the extraction of the parameters for the normal modes. Recent theoretical developments are described which suggest that the calculation of these effects may be extremely difficult even in weakly anharmonic crystals.

Keywords

Normal Mode Inelastic Scattering Lattice Vibration Neutron Inelastic Scattering Phonon Dispersion Curve 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    See, for example, Neutron Inelastic Scattering, Vols, I and II, IAEA, Vienna (1968).Google Scholar
  2. 2.
    Skalyo, J., Frazer, B. C. and Shirane, G., Phys. Rev. B1, 278 (1970).ADSCrossRefGoogle Scholar
  3. 3.
    Leigh, R. S., Szigeti, B. and Tewary, U. K., Proc. Roy. Soc. A320, 505 (1971).ADSCrossRefGoogle Scholar
  4. 4.
    Cochran, W., Neutron Inelastic Scattering, Vol. I, IAEA, Vienna (1968).Google Scholar
  5. 5.
    Cowley, R. A., Advances in Physics 12, 421 (1963).ADSCrossRefGoogle Scholar
  6. 6.
    Cowley, E. R. and Cowley, R. A., Proc. Roy. Soc. A237, 259 (1965).ADSGoogle Scholar
  7. 7.
    Harada, J., Axe, J. D. and Shirane, G., Phys. Rev. B4, 155 (1971).ADSCrossRefGoogle Scholar
  8. 8.
    Ambegaoker, U., Conway, J. and Baym, G., Lattice Dynamics, ed. by R. F. Wallis. (Pergamon: New York) p. 261 (1965).Google Scholar
  9. 9.
    Cowley, R. A. and Buyers, W.J.L., J. Phys. C. 2, 2262 (1969).ADSCrossRefGoogle Scholar
  10. 10.
    Cowley, R. A., Svensson, E. C. and Buyers, W.J.L., Phys. Rev. Letters 23, 525 (1971).ADSCrossRefGoogle Scholar
  11. 11.
    Sham, L., Phys. Rev. 156, 494 (1967).ADSCrossRefGoogle Scholar
  12. 12.
    Svensson, E. C. and Buyers, W.J.L., Phys. Rev. 165, 1063 (1968).ADSCrossRefGoogle Scholar
  13. 13.
    Cowley, R. A., Proc. Phys. Soc. 90, 1127 (1967).ADSCrossRefGoogle Scholar
  14. 14.
    Ruvalds, J. and Zawadowski, A., Phys. Rev. B2, 1172 (1970).ADSCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1972

Authors and Affiliations

  • R. A. Cowley
    • 1
  1. 1.Department of PhysicsUniversity of EdinburghScotland

Personalised recommendations