X-ray thermal-diffuse-scattering study of soft modes in paraelectric BaTiO3

Naohisa Takesue*, Mario Maglione, H. D. Chen

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Anomalous x-ray thermal diffuse scattering (TDS) from the paraelectric BaTiO3 has been measured as a function of temperature using synchrotron radiation. Sheets of intensities that were previously reported have been confirmed. The origin of the observed TDS intensities is attributed to the soft on-(100) TA modes and overdamped [010]TO mode for reduced wave vector q>0.25 and <0.25, respectively. In agreement with the previous neutron inelastic scattering experiment, our results support the notion of the one-dimensionally correlated optic motion of atoms.

Original languageEnglish
Pages (from-to)6696-6699
Number of pages4
JournalPhysical Review B
Volume51
Issue number10
DOIs
StatePublished - 1 Jan 1995

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