Abstract
The temperature dependence of the soft mode frequency and damping in BaTiO3 and SrTiO3 as obtained with a scanning infrared interferometer is reported in their cubic paraelectric phase up to 1 350 K. Although the soft mode damping in BaTiO3 is found to be 4 times higher than in SrTiO3, otherwise soft mode behaviors are similar and it seems there is no need to invoke a mechanism for the mode hardening in the former material fundamentally different from that in the second.
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© 1981 Plenum Press, New York
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Servoin, J.L., Luspin, Y., Gervais, F. (1981). Temperature Dependence of Polar Optical Phonons in the Cubic Phase of BaTiO3 and SrTiO3 . In: Devreese, J.T., Lemmens, L.F., Van Doren, V.E., Van Royen, J. (eds) Recent Developments in Condensed Matter Physics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-1086-0_19
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DOI: https://doi.org/10.1007/978-1-4684-1086-0_19
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