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 language | English |
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Pages (from-to) | 6696-6699 |
Number of pages | 4 |
Journal | Physical Review B |
Volume | 51 |
Issue number | 10 |
DOIs | |
State | Published - 1 Jan 1995 |