# Dependence of Soft Phonon Spectra on Flexoelectric Cou-pling in Ferroelectrics

### Abstract

Analytical expressions describing the frequency dispersion of the soft transverse acoustic (TA)

and optic (TO) phonon modes in uniaxial ferroelectrics, as well as their dependence on the

flexoelectric coupling constant f, have been analyzed in the framework of the Landau–Ginzburg–

Devonshire theory. A critical behavior of the TA mode with respect to the f magnitude is

revealed.

### References

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*Ukrainian Journal Of Physics, 63*(2), 168. Retrieved from https://ujp.bitp.kiev.ua/index.php/ujp/article/view/118/54

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