Lattice Dynamical Calculations for Li1+xTi2-xO4 (x=0.33) and Li1-yMgyTi2O4 (y=0.1, 0.3) |
| A.K. Kushwaha
Department of Physics, K.N. Govt. P.G. College, Gyanpur, Bhadohi-221304, India |
| Received: October 10, 2012; In final form: April 24, 2013 |
| Full Text PDF |
| Zone-centre Raman and infrared phonon frequencies for the spinel phases of oxides Li1+xTi2-xO4 (x=0.33) and Li1-yMgyTi2O4 (y=0.1, 0.3) of space group Fd3m have been calculated using a proposed short-range force constant model. In this model, the lattice potential energy is expanded using Taylor's expansion in the harmonic approximation. The calculated zone-centre phonon frequencies are in good agreement with the available experimental and previously calculated results. |
DOI: 10.12693/APhysPolA.124.695 PACS numbers: 63.20.-e |