Pb- and Ti-isotope effects in PbTiO3 by heat capacity measurement and neutron powder diffraction

Hirotake Shigematsu, Hitoshi Nakadaira, Tsuneo Matsui, Aya Tobo, Kenji Ohoyama

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The heat capacity and the crystal structure of perovskite lead titanate, PbTiO3, have been analyzed by differential scanning calorimetry and neutron powder diffraction, respectively, in order to investigate the isotope effect. The ferroelectric transition temperature and the shape of the anomaly in the heat capacity due to phase transition changed by Pb- and Ti-isotope substitution. On the other hand, Rietveld refinement of the neutron diffraction data confirmed that the differences in the lattice parameters and the structural parameters among isotope-enriched and natural samples were not observed within experimental error below 500 K.

Original languageEnglish
Pages (from-to)395-398
Number of pages4
Journaljournal of nuclear science and technology
Volume39
Issue number4
DOIs
Publication statusPublished - 2002 Apr

Keywords

  • Crystal structure
  • Ferroelectric phase transition
  • Heat capacity
  • Isotope effects
  • Lead
  • Neutron powder diffraction
  • PbTiO
  • Titanium
  • Titanium oxides

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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