Synthesis and Spectral Characteristics of CoO mixed ZnO-Bi2O3-B2O3 Glasses

Chandrasekhar Bejjipurapu; Nagarjuna Gunnam; Ramesh Sopinti; Dr Raghavaiah B V

Chandrasekhar Bejjipurapu Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, 522510, Andhra Pradesh, India
Nagarjuna Gunnam Department of Chemistry, S.R.R. & C.V.R. Government Degree College (A), Vijayawada, 520 004, Krishna District, Andhra Pradesh, India
Ramesh Sopinti Department of Physics, RGUKT - Ongole Campus, Rajiv Gandhi University of Knowledge Technologies–AP, Ongole, 523001, Andhra Pradesh, India
Dr Raghavaiah B V Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur 522510, Andhra Pradesh, India

Abstract

Bismuth borate glasses containing ZnO and CoO were synthesized by conventionalmelt-quench process. CoO is introduced up to maximum of 0.8 mol% by replacing boric acid. Glass samples were characterized by x-ray diffraction and scanning electron microscopytechniques. Characterization methods confirm the non-crystallinebehaviourof samples. Density of the samples found to increase while molar volume decreases with the content of cobalt oxide. Optical absorption spectra have exhibited the characteristic absorption bands corresponding to divalent and trivalent cobalt ions. Infrared spectra display all characteristic vibrational bands of different molecular groups. Increasing structural degree of disorder is evidenced from the analyses of results and details are presented.

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