References
- Pepinsky , R. and Makita , Y. 1962 . Bull. Am. Phys. Soc. Ser. II , 7 : 241
- Ashida , T. , Bando , S. and Kakuda , M. 1972 . Acta Crystallogr. B , 28 : 1560
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- 1969 . Sov. Phys.-JETP , 29 : 1123
- Sandvold , E. and Courtens , E. 1983 . Phys. Rev. B , 27 : 5660
- Stauffer , D. 1978 . Ferroelectrics , 18 : 199
- Levanyuk , A. P. , Osipov , V. V. , Sigov , A. S. and Sobyanin , A. A. 1979 . Zh. Eksp. Teor. Fiz. , 76 : 345
- 1979 . Sov. Phys.-JETP , 49 : 176 Equation (4.16) of this paper gives the defect contribution to the damping constant yd. The square of the soft-mode frequency is ω2 0 α t (neglecting the influence of defects on the soft mode). It follows that T ≈ γd/ω2 0 α t[ytilde]. This exponent was erroneously quoted to be -3/2 in Ref. 4. In fact, for a uniaxial ferroelectric one finds γd α t−1 (A. P. Levanyuk, private communication), so that γ = − 2
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