Lattice vibration spectra and thermal properties of SrWO4 single crystal

Peaks 923(ν1) and 339(ν2) cm−1 show obvious different scattering intensity yet other peaks remain the same intensity, that might be a indication for the not fully polarization of the two peaks. That is also found in the NaY(WO4)2 by Macalik et al. The authors ascribe that by the local disorder of the cationic layers, which forms the domain-like structure and lead the not fully polarized modes to be seen in other configurations. Furthermore, the anisotropy of thermal properties was explained by crystal structure and its correlation with the Raman and IR spectra.