Broadband inelastic light scattering study on relaxor ferroelectrics

Shinya Tsukada, Yuji Ike, Jun Kano, Tadashi Sekiya, Yoshiro Shimojo, Ruiping Wang, Seiji Kojima

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Dielectric and light scattering studies on a Pb(Ni1/3Nb 2/3)O3-0.29PbTiO3 single crystal have been conducted in a wide temperature range to clarify the relaxational properties of polar nanoregions (PNRs). The temperature dependences of the relaxation time observed in light scattering spectra show two characteristic temperatures: associated with enhancement of the correlation length in the PNRs T* and related to a temperature-induced macroscopic structural phase transition T f. These results are closely related to the behavior of the PNRs. We suggest that two relaxation processes are attributed to the central peak and that the origins of the observed relaxation processes are two types of switching processes of diple moments in the PNRs. In addition, the activation energy at 0K has been evaluated as H0B = 2.11 × 103 K.

Original languageEnglish
Pages (from-to)7151-7154
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume46
Issue number10 B
DOIs
Publication statusPublished - Oct 22 2007
Externally publishedYes

Keywords

  • Brillouin scattering
  • Central peak
  • Diffuse phase transition
  • Polar nanoregion
  • Raman scattering
  • Relaxor

ASJC Scopus subject areas

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

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