Effect of sample-preparation history on domain and crystal structure in a relaxor-ferroelectric single crystal

Jongchul Jeon, Soong Ju Oh, Kyou Hyun Kim

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of sample-preparation procedures on single crystals of the relaxor-based ferroelectric Pb(Mg1/3Nb2/3)O3-31%PbTiO3 (PMN-31%PT) has been investigated. PMN-31%PT single crystals were treated using the general sample-preparation methods of mechanical polishing and Ar-ion milling. Similar domain structures were artificially induced in both the mechanically polished and the Ar-ion milled PMN-31%PT; this domain structure was not observed in the original PMN-31%PT single crystal. Macroscopic structural investigation using X-ray diffraction showed that these general sample-preparation methods induce a structural change from a monoclinic-like to a tetragonal-like structure. A study of local symmetry also indicated that Ar-ion milling induces a structural change from the original monoclinic-like crystal symmetry to a tetragonal-like crystal symmetry. It is also demonstrated that the conventional sample-preparation methods induce a poling-like effect on PMN-31%PT.

Original languageEnglish
Pages (from-to)381-386
Number of pages6
JournalJournal of Applied Crystallography
Volume53
DOIs
Publication statusPublished - 2020 Apr 1

Keywords

  • convergent-beam electron diffraction
  • relaxor-based ferrroelectrics
  • sample preparation
  • symmetry investigation
  • symmetry quantification

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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