Space Group Analysis of the phonon Symmetry and Study of theRaman Spectra for β-BaB₂O₄

In this paper, the lattice vibrations of barium metaborate (β-BaB₂O₄) crystal are analysed with the aid of space group theory. The β-BaB₂O₄ crystal belongs to space group C⁶_3v(R3C). The vibration modes are classified by the method of the factor group of the space group. The results of infrared and Raman spectra have been given .