Effects of Cl-Cl interaction on phonon dispersion in perovskite type CsPbCl3 |
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| Authors: | MM SinhaK Wakamura |
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| Institution: | Department of Applied Science, Okayama Science University, 1-1 Ridai-cho, Okayama 700-0005, Japan |
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| Abstract: | The phonon dispersion curves in three symmetry directions of phase I of CsPbCl3 superionic conductor are calculated by applying the de'Launay angular force model. With the third neighbor interaction between Cl-Cl ions, considerable agreements are obtained for all phonon frequencies at zone center (ZC) and also for the acoustic modes in the Δ direction. Two high energy phonon modes at ZC-point are reasonably understood. |
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