A lattice dynamical investigation of the Raman and the infrared frequencies of the cubic Y2Ru2O7 pyrochlore Original Research Article

A short-range force constant model has been applied for the first time to investigate the Raman and the infrared frequencies in Y2Ru2O7 pyrochlore in its cubic phase of space group Fd3m. The calculations of zone center phonons have been made with four stretching and three bending force constants. The calculated values of Raman and infrared frequencies are in good agreement with the observed ones.