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Polarizability and Optical Basicity of Dy3+ Ions Doped Yttrium Zinc Lithium Bismuth Borate Glasses

S. L. Meena

Ceremic Laboratory, Department of Physics, Jai Narain Vyas University, Jodhpur 342001(Raj.) INDIA.

DOI : http://dx.doi.org/10.29055/jpaip/285

ABSTRACT

Glass of the system: (20-x) Bi2O3:15Li2O:15ZnO: 10Y2O3:40 B2O3: xDy2O3. (where x=1, 1.5,2 mol %) have been prepared by melt-quenching method. The amorphous nature of the glasses was confirmed by X-ray diffraction studies. The physical parameters like density, dielectric constant, electronic polarizability, optical basicity, oxide ions polarizability have been evaluated. Dielectric constant, refractive index, electronic polarizability varies with increasing mole% of Dy2O3 respectively. The metallization criterion has been calculated on the basis of refractive index and energy gap. It was found to be decreased with increasing refractive index and decreasing energy gap. The large value of metallization criterion indicates that the glass materials are insulators.

Keywords : dysprosium based glass; Optical basicity; Polarizability; Metallization criterion.