Structure, spectra and Faraday rotation in TiO2 doped diamagnetic PbO-Bi2O3-B2O3 glasses

Abstract In this paper, we report, for the first time, the Faraday rotation of TiO 2 doped diamagnetic glasses with molar composition of 50PbO-40Bi 2 O 3 -(10 − x)B 2 O 3 :xTiO 2 (where x = 0, 0.2%, 0.5%, 1%, and 2%, respectively). The structure and properties of glasses were characterized by X-ray diffraction (XRD), Raman scattering, UV–Visible absorption, Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) etc. A home-made optical bench was constructed for the Faraday rotation measurement. The incorporated TiO 2 changed PBB structure by introducing bonding defect and non-bridging oxygen, which accordingly affected the glass forming ability, thermal performance and Faraday rotation. The Verdet constants as a function of laser wavelength, glass cutoff and TiO 2 contents were studied, respectively. A yellowish transparent and homogenous glass with a big UV cutoff wavelength (458 nm) and a big Verdet constant (0.1634 min/G·cm @633 nm) was obtained as a good candidate for magneto optical applications.