30Jan 2017

SPECTROSCOPIC PROPERTIES OF LITHIUM SODIUM BORATE GLASS BY THE ADDITION OF MoO3

  • Department of Physics Rayalaseema University,Kurnool.
  • Deparment of Physics, JNTUH, Hyderabad.
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The spectroscopic properties of Li2O –Na2O3-B2O3 glass containing different concentrations of MoO3 (ranging from 0 to 1 mol %) were prepared by melt quenching are studied. Spectroscopic (XRD, infrared, optical absorption spectra and EPR) properties of these glasses have been carried out. As the concentration of MoO3 is increased especially beyond 0.4 mol %, the colour of the glasses increased, which is indicating the reduction of molybdenum ions from the Mo6+ state to the Mo5+ state. The Optical absorption Spectrum contains one broad absorption band around 695 nm is attributed to the excitation of Mo5+ (4d1) ion. EPR studies reveal Molybdenum ions are expected to exist mainly in the Mo6+ state in the glass network. EPR, FTIR and Optical absorption spectra of paramagnetic ion in the above glasses reveal that the site symmetry of the transition metal ion is elongated octahedral.

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[M. Sugathri and P. Madhusudana Rao (2017); SPECTROSCOPIC PROPERTIES OF LITHIUM SODIUM BORATE GLASS BY THE ADDITION OF MoO3 Int. J. of Adv. Res. 5 (Jan). 1977-1983] (ISSN 2320-5407). www.journalijar.com

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Article DOI: 10.21474/IJAR01/2968      
DOI URL: https://dx.doi.org/10.21474/IJAR01/2968

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