期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 25, 期 12, 页码 2393-2396出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2005.03.068
关键词
PZT; perovskites; X-ray methods
The titanium-rich PZT solid solution PbZr0.20Ti0.80O3 was studied under high pressure by X-ray diffraction and Raman spectroscopy. A series of low-symmetry phases were observed, including monoclinic (space groups Cm? and Cc) and triclinic forms (space groups F1 and F (1) over bar) in PbZr0.20Ti0.80O3. High pressure Raman spectra obtained are consistent with a monoclinic (Cc)-trictinic (F1) phase transition involving a soft mode at 9 GPa, in agreement with the change in compressibility detected by X-ray diffraction. The strong Raman spectra observed in the paraelectric phase can also be explained by the triclinic F! symmetry. (c) 2005 Elsevier Ltd. All rights reserved.
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