Raman and IR spectroscopy investigations of double tungstates

The investigations of the Raman scattering spectra of the KDy(WO4)2 single crystals have shown that the phase transitions found at 6.38 K exhibit the peculiarities characteristic of SPT Jahn-Teller type. The paper presents also the results of IR absorption investigations of the ADy(WO4)2 single crystals, where A equals K, Rb.