Structural transitions in [001]/[111]-oriented 0.26Pb(In 1/2Nb1/2)O3-0.46Pb(Mg1/3Nb 2/3)O3-0.28PbTiO3 single crystals probed via neutron diffraction and electrical characterization

  • Qian Li
  • , Yun Liu
  • , Jian Wang
  • , Andrew J. Studer
  • , Ray L. Withers
  • , Zhenrong Li
  • , Zhuo Xu

Research output: Contribution to journalArticlepeer-review

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Abstract

We report changes in the metric symmetry of unpoled and electrically poled single crystals of 0.26Pb(In1/2Nb1/2)O3-0. 46Pb(Mg1/3Nb2/3)O3-0.28PbTiO3, as revealed by neutron diffraction in conjunction with electrical measurements. The unpoled crystals show relaxor characteristics and an average rhombohedral symmetry that persists from ambient temperature up to the Curie temperature of ∼165 °C. Poling along a [111] direction enhances the rhombohedral distortion away from cubic metric symmetry but appears not to induce any monoclinic phases. By contrast, the poled [001]-oriented crystal has orthorhombic (or monoclinic MC) metric symmetry at 25 °C. An intermediate transition to a metrically tetragonal phase around 120 °C is confirmed for both poled crystals.

Original languageEnglish
Article number154104
JournalJournal of Applied Physics
Volume113
Issue number15
DOIs
StatePublished - Apr 2013

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