Temperature evolution of the optical phonons in Pb(Ni1/3Nb 2/3)O3 single crystals studied by Raman scattering

Jun Kano, Hiroki Taniguchi, Desheng Fu, Mitsuru Itoh, Seiji Kojima

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Raman scattering of lead nickel niobate Pb(Ni1/3Nb 2/3)O3 (PNN) single crystals grown by the flux method has been performed to investigate the temperature dependence of the optical phonons of relaxors. Anomaly of the temperature dependence of the Raman intensity at 780 cm-1 was observed. Polar microregions promote the growth of volume gradually above the Curie temperature (∼170 K), and then freeze around 200 K. From the extrapolation of the temperature dependence of the depolarization ratio, we tried to estimate Burns temperature.

Original languageEnglish
Pages (from-to)67-72
Number of pages6
JournalFerroelectrics
Volume367
Issue number1 PART 1
DOIs
Publication statusPublished - Dec 1 2008
Externally publishedYes
Event11th European Meeting on Ferroelectricity, EMF-2007 - Bled, Slovenia
Duration: Sep 3 2007Sep 7 2007

Keywords

  • Burns temperature
  • Polar microregion
  • Raman scattering
  • Relaxor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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