Optical linear & nonlinearity and Faraday rotation study on V2O5 nanorod doped glass and glass-ceramic: Impact of optical basicity

Abstract Different valence states and coordination units of vanadium in low optical basicity glasses have been extensively studied for conduction, photoluminescence and catalysis applications. For the first time we studied the influence of vanadium ions in high optical basicity diamagnetic hosts to nonlinear and Faraday rotation properties by Scanning electron microscopy, X-ray diffraction, Raman, Fourier transform infrared and Ultraviolet–visible spectra, Z-scan techniques etc. 15 nm-pure phase V2O5 nanorod was synthesized and then doped in heavy metal oxide diamagnetic glass by melt-quenching method. For the same doping content, higher optical basicity was favorable for glass forming while low optical basicity could accelerate cubic Bi2O3 crystals formation. Vanadium coordination units dominantly existed as VO5 in high optical basicity, however, VO4 units increased for higher V2O5 content even at the same optical basicity environment. All samples showed good nonlinear behaviors and decreased energy bandgap. The high polarizability of diamagnetic vanadium ions in high optical basicity matrix increased the Faraday rotation (0.2134 min/G.cm at 633 nm) and Figure of merit (0.58) which are attractive for nonlinear and magneto optical devices applications.