Vi. Burkov et al., SPECTROSCOPIC AND CHIROPTICAL PROPERTIES OF DOPED SILLENITE CRYSTALS .5. OPTICAL AND CHIROPTICAL CHARACTERISTICS OF NI-DOPED BI12TIO20 AND BI12SIO20, Inorganic materials, 33(4), 1997, pp. 412-415
Ni-doped Bi12TiO20 and Bi12SiO20 Single crystals were grown by the Czo
chralski technique. The effect of doping on the absorption, circular d
ichroism, and magnetic circular dichroism spectra and on the rotatory
dispersion of these crystals was investigated. Ni2+ was found to occup
y tetrahedral sites of the sillenite structure. The observed absorptio
n bands are identified, and the nature of band splitting in the visibl
e is discussed.