Raman scattering studies of Pb(ZrxTi1-x)O3 and Pb1-3y/2Ndy(ZrxTi1-x)O3 ceramics with UV and visible laser lights

Johannes Frantti, Vilho Lantto, Masato Kakihana

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Raman scattering studies of lead zirconate titanate (Pb(ZrxTi1-x)O3, PZT, 0.10 ≤ × ≤ 0.70), Nd-modified lead titanate (Pb1-3y/2NdyTiO3, PNT, 0.02 ≤ y ≤ 0.10) and Nd-modified lead zirconate titanate (Pb1-3y/2Ndy(Zr0.53Ti0.47)O 3 PNZT, 0 ≤ y ≤ 0.04) bulk ceramics using uv and visible laser lights (wavelengths 363.79 nm and 514.532 nm, respectively) were carried out at room temperature. In the case of uv light, Raman spectra revealed three or four high-frequency modes above 1000 cm-1 in all the samples and a weak mode at around 970 cm-1 in PNT samples. These modes do not correspond to the first-order modes from the ideal crystal symmetries (C14v, C13v, C63v) which were the only phases revealed by the X-ray diffraction measurements. The intensities of these modes were strongest in the trigonal phase region and decreased with decreasing Zr content. The frequency of the mode at around 1170 cm-1 in PZT ceramics showed anomalous behaviour at the phase transitions between the tetragonal and high-temperature trigonal phases and between the high- and low-temperature trigonal phases. These modes probably correspond to an electronic process in the Pb3+ hole traps.

Original languageEnglish
Pages (from-to)5406-5409
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume37
Issue number9 PART B
Publication statusPublished - 1998 Sep 1
Externally publishedYes

Keywords

  • Hole trap
  • Lead zirconate titanate
  • Neodymium
  • Raman spectroscopy
  • uv

ASJC Scopus subject areas

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

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