6533b82ffe1ef96bd1295291
RESEARCH PRODUCT
X-ray thermal-diffuse-scattering study of soft modes in paraelectricBaTiO3
Naohisa TakesueHaydn ChenMario Maglionesubject
Nuclear magnetic resonanceMaterials sciencePhononScatteringSynchrotron radiationWave vectorNeutronSoft modesInelastic scatteringAtmospheric temperature rangeAtomic physicsdescription
Anomalous x-ray thermal diffuse scattering (TDS) from the paraelectric ${\mathrm{BaTiO}}_{3}$ 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${]}_{\mathrm{TO}}$ mode for reduced wave vector qg0.25 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-03-01 | Physical Review B |