Disorder-induced Raman scattering in dilute ferroelectrics

The theory of the Raman light scattering on the localized polar modes induced by random electric fields in disordered cubic ferroelectrics is presented for a case of strong disorder. The results are compared with the Raman data for PMN crystals. The observed anomalies gives the evidence for the Grif...

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Bibliographic Details
Published in:Ferroelectrics 1997-01, Vol.199 (1), p.197-205
Main Authors: Torgashev, V. I., Yuzyuk, Yu. I., Latush, L. T., Timonin, P. N., Farhi, R.
Format: Article
Language:English
Subjects:
Dipole glass
Raman scattering
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Summary:The theory of the Raman light scattering on the localized polar modes induced by random electric fields in disordered cubic ferroelectrics is presented for a case of strong disorder. The results are compared with the Raman data for PMN crystals. The observed anomalies gives the evidence for the Griffiths' (650 K) and dipole-glass (270 K) transitions.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150199708213440