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Temperature Dependence of the Raman Frequency, Damping Constant and the Activation Energy of a Soft-Optic Mode in Ferroelectric Barium Titanate

✍ Scribed by Kiraci, A.; Yurtseven, H.


Book ID
115494808
Publisher
Taylor and Francis Group
Year
2012
Tongue
English
Weight
167 KB
Volume
432
Category
Article
ISSN
0015-0193

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Beginning with the mode Gru È neisen parameter, the pressure, temperature and concentration dependences of phonon frequency have been derived under the condition of variable Gru È neisen parameter with pressure, temperature and composition. Fits to the Raman-active E g mode at %450 cm Γ€1 in TiO 2 an