Applied Physics A

, Volume 74, Supplement 1, pp s989–s991

Inelastic and critical neutron scattering in the ergodic phase of the relaxor ferroelectric PbMg1/3Nb2/3O3

  • Yu.O. Chetverikov
  • A.A. Naberezhnov
  • S.B. Vakhrushev
  • B. Dorner
  • A. Ivanov

DOI: 10.1007/s003390201598

Cite this article as:
Chetverikov, Y., Naberezhnov, A., Vakhrushev, S. et al. Appl Phys A (2002) 74(Suppl 1): s989. doi:10.1007/s003390201598

Abstract.

Results of a study of low-energy excitations and critical scattering in the field-induced ergodic ferroelectric phase of the relaxor ferroelectric PbMg1/3Nb2/3O3 are presented. It is demonstrated that a transition to the ferroelectric phase does not result in the appearance of a clearly defined soft mode. The observed quasielastic scattering was found to be strongly anisotropic. The q-dependence of the scattering intensity is described in terms of a ‘fractal’ law. For the first time we have observed a strong difference between the topology of polar microregions at room temperature in a ‘virgin’ crystal and in a crystal cooled in an electric field and then reheated.

PACS: 77.84.Dy; 63.20.Dj; 61.12.-q 

Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • Yu.O. Chetverikov
    • 1
  • A.A. Naberezhnov
    • 1
  • S.B. Vakhrushev
    • 1
  • B. Dorner
    • 2
  • A. Ivanov
    • 2
  1. 1.Ioffe Phys.-Tech. Institute RAS, 26 Politekhnicheskaya, 194021, St. Petersburg, RussiaRU
  2. 2.Institute Laue-Langevin, 38042 Grenoble Cedex 9, FranceFR