Investigation of Raman and infrared modes for Sr doped double perovskite oxides Ba2−xSrxMWO6 (M=Ni, Co); for 0≤x≤1.2
作者： Shaveen Garg , M.M. Sinha , H.C. Gupta
DOI: 10.1016/J.PHYSB.2013.10.013
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摘要: Abstract A short-range force constant model has been applied to investigate the Raman and infrared modes in Sr doped ordered double perovskite oxides Ba 2− x MWO 6 (M=Co, Ni); 0≤ ≤1.2 (cubic phase) using normal coordinate analysis based on G–F matrix method. In present work, calculations zone centre phonons have made with three stretching two bending constants its cubic phase (space group: Fm-3m) only. The calculated wave numbers are well agreement available experimental results. proposed for first time. significant contribution of each towards every also determined by investigating potential energy distribution.
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