Cu0&Cu2O nanoparticles functionalized diamagnetic glasses: linear/nonlinear optical, magnetic and Faraday rotation

Abstract

This paper reports Cu0&Cu2O nanoparticles synthesis and functionalized optical linear/nonlinear, magnetic and Faraday rotation properties of diamagnetic glasses. 40nm pure cubic Cu2O nanoparticles presented fingerprint Fourier transform infrared vibration at 632 cm−1 and characteristic Raman vibration of Cu(I)-O at 219 cm−1. Transparent glasses were obtained for Cu2O doping amount < 0.5 mol% under reducing environment. Cu2O modified glass structure and changed coordination of BiO3 and BO3. Cu0 and Cu+ ions co-existed, Bi4f and O1s changed with Cu2O amount. Cutoff wavelength red-shifted and a Surface Plasmon Resonance peak of Cu nanoparticles appeared at 680 nm whose intensity increased with doping amount. Under 320 nm excitation, glass showed broad and strong luminescence at 560 nm due to 3d94s1→3d10 transitions of Cu+ and Cu0. The synergetic effect of Surface Plasmon Resonance of Cu0 and electron transition of diamagnetic Cu+ greatly enhanced magnetization, nonlinearity, Verdet constant of glass (0.2097 min/G.cm) and figure of merit.