Morphotropic domain structures and dielectric relaxation in piezo-/ferroelectric Pb(In1/2Nb1/2)O3-Pb(Zn1/3Nb2/3)O3-PbTiO3single crystals

Tao Li, Chang Chen, Mao Ye, Ximei Qiu, Peng Lin, Xinbo Xiong, Xierong Zeng, Haitao Huang, Shanming Ke

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

The domain structures, phase transitions and dielectric relaxation of relaxor-based piezo-/ferroelectric (1-x)Pb(In1/2Nb1/2)O3-0.33Pb(Zn1/3Nb2/3)O3-xPbTiO3(x=0.30, 0.34, 0.37, and 0.42) single crystals, abbreviated as PIN-PZN-PT, grown by flux method, have been analyzed by polarized light microscope and dielectric spectroscopy. The dielectric relaxation was described by the Curie-Weiss law and Lorentz-type quadratic equation. The substitution of Ti4+ions for the B-site complex (Zn1/3Nb2/3)4+and (In1/2Nb1/2)4+ions results in a long-range symmetry breaking, as revealed by the formation of birefringent domains. Single crystal of PIN-PZN-PT with morphotropic compositions exhibit complex domain structures, which are composed of both rhombohedral and tetragonal phases intimately mixed together. The domain structures, the sequence and temperature of phase transitions have been interpreted in relation to the morphotropic phase boundary behavior of the PIN-PZN-PT system. The analysis of morphotropic domain structures and phase transitions provides a better understanding of the microscopic mechanisms of the enhanced piezoelectric properties recently disclosed in the PIN-PZN-PT and other PZN-based piezocrystals.
Original languageEnglish
Pages (from-to)33-40
Number of pages8
JournalJournal of Crystal Growth
Volume441
DOIs
Publication statusPublished - 1 May 2016

Keywords

  • A1. Phase transitions
  • A2. Piezoelectric
  • B2. Ferroelectric
  • Birefringence
  • Domain structures
  • Morphotropic phase boundary
  • Relaxor-based
  • Single crystals

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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