Publication: PbTiO3 addition and internal dynamics in Pb(Zn13Nb23)O3 crystal studied by Raman spectroscopy
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Issued Date
2005
Resource Type
File Type
application/pdf
ISSN
10980121
Other identifier(s)
2-s2.0-29544437557
Rights Holder(s)
Scopus
Bibliographic Citation
Physical Review B - Condensed Matter and Materials Physics. Vol 72, No.17 (2005), p.-
Suggested Citation
Svitelskiy O., La-Orauttapong D., Toulouse J., Chen W., Ye Z.-G. PbTiO3 addition and internal dynamics in Pb(Zn13Nb23)O3 crystal studied by Raman spectroscopy. Physical Review B - Condensed Matter and Materials Physics. Vol 72, No.17 (2005), p.-. doi:10.1103/PhysRevB.72.172106 Retrieved from: https://hdl.handle.net/20.500.14740/6045
Author(s)
Abstract
We present the results of the Raman study of lattice dynamics and development of mesoscopic range order in a relaxor ferroelectric Pb(Zn13Nb23)O3 crystal containing 4.5% of PbTiO3 as it is cooling down from 1000to100K. As in the other relaxors, the relaxor state develops in four stages separated by three temperatures: Burns temperature TB∼800K, intermediate temperature Td∼550K, and freezing temperature Tf∼370K. However, the mixed crystal shows significant differences compared to the nominally pure one. First, there is a dramatic decrease of the scattered intensity above TB; second, a significant asymmetry of the polarizability tensor occurs near the Td reflected by polarization properties of the central peak; third, a softening of line B (∼780cm-1) is found in the neigborhood of Td; fourth, essentially different in each case is the splitting of the broad band E (∼560cm-1), and its value can serve as an indicator of the order parameter in the system. © 2005 The American Physical Society.