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Two different variations between Na₂ O powders and cadmium oxide contained in phosphate glass with a series of 40P₂ O₅-34ZnO-(21-x) Na₂ O-5CuO-xCdO molar ratio with (x= 1, 2, 3... to 6%) were prepared by conventional quenching melts technique. FTIR transmission spectra have been carried out. The most active peaks were observed in the region 400 cm^-1 to 4000 cm^-1. FT-IR spectra were analyzed to determine and differentiate the various vibrational modes by applying a deconvolution method to the FT-IR spectra. The values of vibrational modes of FTIR spectra were found to vary with the CdO content in glasses. It increase breaks the POP bonds and non-oxygen bridges (NBOs) are created.