Author(s)

Manisha Pal, Baishakhi Roy, Mrinal Pal

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We have investigated the effect of inclusion of two transition metal ions (TMI) on structure and optical properties of borate glass system having composition xMnO₂ – yZnO – (100 – x – y) B₂O₃ (9 ≤ x ≤ 12, 36 ≤y ≤ 48) prepared by melt quenched route. Thermal study by using a differential scanning calorimeter (DSC) reveals that the glass transition temperature (Tg) and crystallization temperature (Tc) of the glasses increases with the increase of borate content in the system. Fourier transform infrared (FTIR) spectra indicate that inclusion of TMI produces BO₃ and BO₄ structural units by breaking the boroxol (B₃O₆) ring. The optical band gap energy estimated from ultraviolet-visible spectra shows a decreasing tendency when TMI are incorporated in the borate structure.

Borate Glass, Differential Thermal Analysis (DTA), Infrared (IR) Spectroscopy, Optical Band Gap

M. Pal, B. Roy and M. Pal, "Structural Characterization of Borate Glasses Containing Zinc and Manganese Oxides," Journal of Modern Physics, Vol. 2 No. 9, 2011, pp. 1062-1066. doi: 10.4236/jmp.2011.29129.