Preparation and optical properties of cobalt doped lithium tetraborate nanoparticles

摘要: Abstract Lithium tetraborate doped with cobalt ions of different concentrations were synthesized by chemical method and characterized X-ray. Field emission scanning electron microscopy reveals the spherical morphology nanoparticles average particle size is estimated to be 50–110 nm. UV–Vis studies show inclusion Co2+ lithium–vacancy pair production. The samples are completely transparent in visible region having absorption peak (220 nm) UV region. Nonlinear optical indicate suitability pure for low power limiting frequency doubling applications. From Z-scan technique, nonlinear parameters such as refractive index, susceptibility 10−8 cm2/W, 10−2 cm/W 10−5 esu respectively.