Inelastic and critical neutron scattering in the ergodic phase of the relaxor ferroelectric PbMg1/3Nb2/3O3
- Cite this article as:
- Chetverikov, Y., Naberezhnov, A., Vakhrushev, S. et al. Appl Phys A (2002) 74(Suppl 1): s989. doi:10.1007/s003390201598
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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.