TY - JOUR AU - Morozovska, A. N. AU - Scherbakov, C. M. AU - Glinchuk, M. D. PY - 2018/03/02 Y2 - 2024/03/29 TI - Dependence of Soft Phonon Spectra on Flexoelectric Coupling in Ferroelectrics JF - Ukrainian Journal of Physics JA - Ukr. J. Phys. VL - 63 IS - 2 SE - Physics of magnetic phenomena and physics of ferroics DO - 10.15407/ujpe63.2.168 UR - https://ujp.bitp.kiev.ua/index.php/ujp/article/view/118 SP - 168 AB - <p>Analytical expressions describing the frequency dispersion of the soft transverse acoustic (TA)<br>and optic (TO) phonon modes in uniaxial ferroelectrics, as well as their dependence on the<br>flexoelectric coupling constant f, have been analyzed in the framework of the Landau–Ginzburg–<br>Devonshire theory. A critical behavior of the TA mode with respect to the&nbsp;f magnitude is<br>revealed.</p> ER -