Effect of Ti on the stability of phases in the (1 - X)Pb(Mg 1/3Nb 2/3)O 3-xPbTiO 3 solid solution

J. B. Li*, G. H. Rao, G. Y. Liu, J. R. Chen, J. K. Liang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Occurrence of the MB-type monoclinic phase induced by the lattice distortion of the rhombohedral structure was evidenced by means of high-resolution x-ray powder diffraction, simplified integrate-breadth analysis and Rietveld refinement in the (1-x)- Pb(Mg1/3Nb2/3)O 3-xPbTiO3(PMN-xPT) ceramics with 15%≤x≤30%. The obvious distortion of lattice along [00h]Cwas observed in the composition range 23%≤x≤30%, and increased with the Ti content. Rietveld refinements indicate that the MB-type monoclinic phase exists in the composition range 23%≤x≤25%, and coexists, as a majority phase, with the MC-type monoclinic phase for 26%≤x≤30%. The rhombohedral (R) phase is stable in the composition range of 15%≤x < 23%. The effect of Ti on the lattice distortion and phase stability in the PMN-PT solid solution is discussed based on the model of competition between rhombohedral and tetragonal polar orders.

Original languageEnglish
Pages (from-to)71-80
Number of pages10
JournalFerroelectrics
Volume313
DOIs
Publication statusPublished - 2005
Externally publishedYes

Keywords

  • Lattice distortion
  • Pb(Mg Nb )O -PbTiO
  • Phase transition
  • X-ray diffraction

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