Structural investigation and optical properties of xMnO2-25Li2O-5Na2O-15Bi2O3-(55-x)B2O3 glasses

International Conference on Advances in Materials and Manufacturing Applications 2017

Kulkarni, Shilpa^1,2 ; Jali, V.M.^2

S.S.A Govt., First Grade College, Ballari

583101, India^1

Department of Physics, Gulbarga University, Kalaburagi

585106, India^2

关键词: Amorphous phase;    Anomalous behavior;    Bismuth borate glass;    Glass compositions;    Glass structure;    Network structures;    Packing density;    Structural investigation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012057/pdf
DOI  :  10.1088/1757-899X/310/1/012057

来源: IOP

【 摘 要 】

This paper deals with the new mixed system of glass compositions Lithium sodium bismuth borate glasses doped with transition metal oxide. The technique used to prepare a sample is by melt quenching. The XRD profile pattern confirmed the amorphous phase of the present glass system. The network structure is based on BO3, BO4units and BiO6octahedral units. No boroxyl rings observed in the glass structure. The addition of MnO2in small amount does not account for major structural changes. Optical band gap lies in the range 1.89 to 0.96 eV. Density, molar volume, oxygen packing density, Tg, direct optical band gap and refractive index show anomalous behavior.