Polarized micro-raman study of the temperature-induced phase transition in 0.67 Pb(Mg1/3Nb2/3)O3-0.33PbTiO3

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Z. K. Xu

Detail(s)

Original languageEnglish
Pages (from-to)290-393
Journal / PublicationChinese Physics Letters
Volume25
Issue number1
Publication statusPublished - 1 Jan 2008

Abstract

Polarized Raman spectra of ferroelectric relaxor 0.67Pb(Mg 1/3Nb2/3)O3-0.33PbTiO3 (0.67PMN-0.33PT) single crystal are systematically investigated in a wide temperature range from -196 to 600°C by micro-Raman scattering technique. The results clearly reveal that there are two structural phase transitions in such composite ferroelectric relaxor: the rhombohedral-tetragonal (R - T) phase transition and the tetragonal-cubic (T - C) phase transition. The former occurs at about TR-T = 34°C, corresponding to the vanishing of the soft A1 mode at 106 cm-1 recorded in the parallel polarization. The latter appears at about TT-C = 144°C, which can be verified with the vanishing of mode at 780 cm-1 measured in the crossed polarization. © 2008 Chinese Physical Society and IOP Publishing Ltd.

Citation Format(s)

Polarized micro-raman study of the temperature-induced phase transition in 0.67 Pb(Mg1/3Nb2/3)O3-0.33PbTiO3. / Sun, Jing-Ya; Yang, Yang; Zhu, Ke; Liu, Yu-Long; Siu, G. G.; Xu, Z. K.

In: Chinese Physics Letters, Vol. 25, No. 1, 01.01.2008, p. 290-393.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review