Polarized Raman and IR spectra of oriented Cd0.9577Gd0.0282□0.0141MoO4 and Cd0.9346Dy0.0436□0.0218MoO4 single crystals where □ denotes the cationic vacancies

•Cd0.9577Gd0.0282□0.0141MoO4 and Cd0.9346Dy0.0436□0.0218MoO4 crystals were grown.•Polarized Raman and IR reflectance spectra were measured.•Influence of the cationic vacancies on the structure and properties was discussed.

Polarized Fourier Transform IR and Raman spectra of Cd0.9577Gd0.0282□0.0141MoO4 and Cd0.9346Dy0.0436□0.0218MoO4 oriented single crystals have been recorded and analyzed using the factor group approach (□ denotes the cationic vacancies). The tetragonal I41/a (C4h6) space group with Z = 2 has been applied in the discussion. The influence of the structural changes induced by the defects in the CdMoO4 host lattice on the vibrational symmetry rules has been analyzed. The assignment of the observed bands to the internal and external modes has been proposed.

Graphical abstractRaman and infrared spectra of CdMoO4.Figure optionsDownload full-size imageDownload as PowerPoint slide