Phase transition in Pb(Mg1/3Nb2/3)0.68TiO0.32O3single crystal

Peng Bao, Feng Yan, Xiaomei Lu, Jinsong Zhu, Huimei Shen, Yening Wang, Haosu Luo

Research output: Journal article publicationConference articleAcademic researchpeer-review


Phase transition of (001)-cut Pb(Mg1/3Nb2/3)0.68Ti0.32O3(PMNT32%) single crystal have been investigated by polarizing light microscopy in the temperature ranged form room temperature to 200 K. The transformation from monoclinic (MA) to cubic (C) phase through an intermedial monoclinic (Mc) phase, i.e. MA-MC-C, was observed in the heating run, and the C-MC-MAphase transition sequence was observed in the cooling run. The temperature-induced rotation of extinction position, which was the result of polarization rotation, was observed in Mc phase. It is interesting that tetragonal (T) phase has not been reached before the Mc phase turn into cubic phase. The existing phase diagram for PMNT system was improved by this experimental result. In addition, it was found the phase transition processes of MC-MAand cubic-Mcshow distinct characters though both of they are first-order.
Original languageEnglish
Pages (from-to)157-164
Number of pages8
JournalIntegrated Ferroelectrics
Publication statusPublished - 1 Dec 2005
Externally publishedYes
EventSeventeenth International Symposium on Integrated Ferroelectrics, ISIF-17 - Shanghai, China
Duration: 17 Apr 200520 Apr 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Ceramics and Composites
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry


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