Raman scattering in sillenite-type crystals

The Raman spectra of Bi24AlPO40 and Bi38ZnO58 crystals have been studied for the first time. The polarization Raman spectra of Bi12GeO20, Bi12TiO20, Bi24AlPO40, and Bi38ZnO58 crystals are also studied. The lines in the Raman spectra of Bi12TiO20, Bi24AlPO40, and Bi38ZnO58 are identified and compared with the lines of the Bi12GeO20 spectra studied earlier. It is shown that the differences in the Raman spectra of the crystals studied are associated with the specific features of their atomic structures.