Disorder of Pb atom in cubic structure of Pb(Zn1/3Nb 2/3)O3-PbTiO3 system

Yoshihiro Terado, Su Jae Kim, Chikako Moriyoshi, Yoshihiro Kuroiwa, Makoto Iwata, Masaki Takata

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

The crystal structures of (1 - x)Pb(Zn1/3Nb2/3)O 3-xPbTiO3 (PZN-PT: 0 ≤ x ≤ 0.3) in the cubic phase at 650K have been investigated by analyzing the high-energy synchrotron-radiation (SR) powder diffraction data using the Rietveld method. It is found that the Pb atom does not settle at the ideal high-symmetry position with a harmonic thermal parameter. The split-atom method reveals that the Pb atom in the cubic phase is disordered and settles randomly at crystallographically equivalent positions slightly off-center of the cubic-corner site. The disordered directions of the Pb atom are significantly changed at the concentration x ∼ 0.15. This structural boundary found in the cubic phase is related to the appearance of the morphotropic phase boundary (MPB).

Original languageEnglish
Pages (from-to)7552-7555
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number9 B
DOIs
Publication statusPublished - 2006 Sep 22
Externally publishedYes

Keywords

  • Disorder of Pb atom
  • Morphotropic phase boundary
  • PZN-PT
  • Perovskite
  • Powder diffraction
  • Rietveld analysis
  • Synchrotron radiation
  • Tolerance factor

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Disorder of Pb atom in cubic structure of Pb(Zn<sub>1/3</sub>Nb <sub>2/3</sub>)O<sub>3</sub>-PbTiO<sub>3</sub> system'. Together they form a unique fingerprint.

Cite this