Lattice Dynamical Calculations for Li_{1+x}Ti_{2-x}O_{4} (x=0.33) and Li_{1-y}Mg_{y}Ti_{2}O_{4} (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 |

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Zone-centre Raman and infrared phonon frequencies for the spinel phases of oxides Li_{1+x}Ti_{2-x}O_{4} (x=0.33) and Li_{1-y}Mg_{y}Ti_{2}O_{4} (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 |