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

doi:10.1080/18811248.2002.9715211

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 journal › Article › peer-review

3 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 language	English
Pages (from-to)	395-398
Number of pages	4
Journal	journal of nuclear science and technology
Volume	39
Issue number	4
DOIs	https://doi.org/10.1080/18811248.2002.9715211
Publication status	Published - 2002 Apr
Externally published	Yes

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

Access to Document

10.1080/18811248.2002.9715211

Cite this

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title = "Pb- and Ti-isotope effects in PbTiO3 by heat capacity measurement and neutron powder diffraction",

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.",

keywords = "Crystal structure, Ferroelectric phase transition, Heat capacity, Isotope effects, Lead, Neutron powder diffraction, PbTiO, Titanium, Titanium oxides",

author = "Hirotake Shigematsu and Hitoshi Nakadaira and Tsuneo Matsui and Aya Tobo and Kenji Ohoyama",

year = "2002",

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T1 - Pb- and Ti-isotope effects in PbTiO3 by heat capacity measurement and neutron powder diffraction

AU - Shigematsu, Hirotake

AU - Nakadaira, Hitoshi

AU - Matsui, Tsuneo

AU - Tobo, Aya

AU - Ohoyama, Kenji

PY - 2002/4

Y1 - 2002/4

N2 - 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.

AB - 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.

KW - Crystal structure

KW - Ferroelectric phase transition

KW - Heat capacity

KW - Isotope effects

KW - Lead

KW - Neutron powder diffraction

KW - PbTiO

KW - Titanium

KW - Titanium oxides

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