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First Principles Calculations of Ionic Vibrational Frequencies in PbMg1/3Nb2/3O3

S. A. Prosandeev·E. Cockayne·E. P. Burton
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Abstract

Lattice dynamics for several ordered supercells with composition PbMg1/3Nb2/3O (PMN) were calculated with first-principles frozen phonon methods. Nominal symmetries of the supercells studied are reduced by lattice instabilities. Lattice modes corresponding to these instabilities, equilibrium ionic positions, and infrared (IR) reflectivity spectra are reported.

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S. A. Prosandeev, E. Cockayne, E. P. Burton. 2003-03-02. First Principles Calculations of Ionic Vibrational Frequencies in PbMg1/3Nb2/3O3. https://doi.org/10.1063/1.1609948

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