Characterization of dielectric property of nanosized (Pb 0.7Sr0.3)TiO3 powders studied by Raman scattering

Jun Kano, Shinya Tsukada, Fan Zhang, Tomoaki Karaki, Masatoshi Adachi, Seiji Kojima

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Nanosized perovskite (Pb0.7Sr0.3)TiO3 powders have been studied by Raman scattering to characterize the dielectric property derived from the particle size effect. All the optical phonons were assigned while referring to previously reported Raman spectra of PbTiO 3. The frequencies of the soft E( 1 TO) and A1(1TO) modes show a slight hardening with a decrease in particle size. The size dependences of the clamped dielectric constants along the a and c axes characterized by the effect of the phonon confinement are evaluated by the Lyddane-Sachs-Teller relation using the observed frequencies of polar modes with E(x,y) and A 1(z) symmetries, respectively.

Original languageEnglish
Pages (from-to)7148-7150
Number of pages3
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

  • Lead strontium titanate
  • Lyddane-Sachs-Teller relation
  • Nanosized powder
  • Phonon confinement
  • Raman scattering

ASJC Scopus subject areas

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

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