39CdO–10Al2O3-(51-x) P2O5: xMnO (x=0,0.1, 0.2, 0.3 and 0.4 wt.%) glasses were synthesized by melt quenching technique.Various physical parameters of these glass materials were calculated and presented. Amorphous nature of these materials was confirmed from XRD and DTA studies. Various stability factors were calculated and presented from DTA analysis; from the results, the stability of the glass network is observed toincrease with MnO concentration from 0.1 to 0.4 wt. %. IR spectral analysis of these glasses exhibited several symmetrical and asymmetrical bands due to phosphate groups; the observed change in these band intensities with increase in MnO concentration from 0.1 to 0.4 wt. % shows an increase in stability of the glass network. Optical absorption studies of these glasses exhibited an absorption bandwith shifting its band position from 500 to 488 nmwith MnO concentration from 0.1 to 0.4 wt. %, which is an indicative of gradual conversion of Mn2+ ions into Mn3+. EPR spectra of these glasses characterized by two signalsdue to Mn2+and Mn3+ions; observations on these signal intensity variations revealed an increase in stability of the glass network from 0.1 to0.4 wt. % of MnO concentration.
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2022: 6.012
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