Raman scattering and interaction and interference of optical vibrations in a γ-Li3PO4 superionic crystal

@article{Mavrin2003RamanSA,
  title={Raman scattering and interaction and interference of optical vibrations in a γ-Li3PO4 superionic crystal},
  author={Boris Mavrin and V. V. Asonov and Valery V. Fomichev and Aleksey K Ivanov-Shits and V. N. Kireev},
  journal={Journal of Experimental and Theoretical Physics},
  year={2003},
  volume={96},
  pages={53-58}
}
Polarized Raman spectra of γ-Li3PO4 single crystal are investigated at temperatures approximately up to 700 K. It is shown that vibrations of PO4 tetrahedrons and cations of the lithium sublattice can be separated in the spectra. It is found that an increase in temperature leads to interference of one-phonon optical modes of symmetry B2g and Ag, which is accompanied by antiresonance in a frequency range near 190 cm−1. Numerical analysis of the spectrum in the region of interaction of optical… CONTINUE READING