Title :
Magneto-optical properties of Fe3+ ions in Bi4Ge3O12
Author_Institution :
Dept. of Exp. Phys., Shumen Univ. “Konstantin Preslavsky”, Shumen, Bulgaria
Abstract :
In this work, the magneto-optical effect and photochromism are investigated in Fe doped Bi4Ge3O12 single crystals in a wide spectral range. It is found that the photosensitivity of doped crystals is significantly shifted to the visible wavelengths. We report the experimental results of Faraday rotation in the case of Fe doped Bi4Ge3O12 (BGO). The rotation angle of the polarization plane of the crystal plate has been investigated in the magnetic field in illuminated state, obtained by exposure with ultraviolet (UV) light and annealed state developed after annealing at 400°C. We have observed the strong appearance of Fe impurity in the spectral range 320 nm - 600 nm. The experimental determination of magneto-optic properties of Fe3+ ions gives us opportunity for calculation of the refractive index n of the doped BGO.
Keywords :
Faraday effect; annealing; bismuth compounds; impurities; iron; photochromism; refractive index; spectral line shift; ultraviolet spectra; visible spectra; Bi4Ge3O12:Fe; Faraday rotation; annealing; impurity; magnetic field; magnetooptical properties; photochromism; photosensitivity; polarization plane; refractive index; rotation angle; single crystals; spectral shift; temperature 400 degC; ultraviolet light; visible wavelengths; wavelength 320 nm to 600 nm; Optical sensors; 3d transition metals; Faraday rotation; Verdet constant; doped eulitines;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2012 12th IEEE Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-4673-2198-3
DOI :
10.1109/NANO.2012.6322068
