Premium
Polarized Raman mapping study of the microheterogeneity in 0.67PbMg 1/3 Nb 2/3 O 3 ‐0.33PbTiO 3 single crystal
Author(s) -
Yang Y.,
Liu Y. L.,
Zhang L. Y.,
Zhu K.,
Ma S. Y.,
Siu G. G.,
Xu Z. K.,
Luo H. S.
Publication year - 2010
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2600
Subject(s) - raman spectroscopy , monoclinic crystal system , single crystal , crystallography , crystal (programming language) , materials science , raman scattering , phase boundary , phase (matter) , crystal structure , chemistry , analytical chemistry (journal) , optics , physics , programming language , organic chemistry , chromatography , computer science
Polarized micro‐Raman spectroscopy was carried out on the (001) face of a 0.67PbMg 1/3 Nb 2/3 O 3 ‐33%PbTiO 3 (PMN‐33%PT) single crystal. The Raman images revealed the spatial variations of the intensity of the Raman bands, suggesting that the structure in the PMN‐33%PT single crystal varied from one micro‐area to another. When changing the polarization direction of the incident light with respect to the selected crystalline axes, the intensities of the Raman modes varied periodically. According to the Raman selection rules (RSRs), the angular dependences of the Raman modes indicated that the PMN‐33%PT single crystal is in the monoclinic phase. Furthermore, the color patterns in the Raman images were associated with the coexistence of the M A ‐ and M C ‐type monoclinic phases in the PMN‐33%PT single crystal. Our results provide useful information for understanding the microheterogeneity of the relaxor PMN‐ x PT single crystals with compositions near the morphotropic phase boundary region. Copyright © 2010 John Wiley & Sons, Ltd.