The optical absorption edge of undoped, lightly Al‐doped, and heavily Al‐doped Bi12SiO20
single crystals is found to be exponential and follows Urbach's rule with σ0= 0.71 at room …

Bismuth silicon oxide and bismuth germanium oxide were grown by the Czochralski method.
Crystals were typically 2 cm in diameter and 5-cm long. Materials were of 99.999% purity …

The optical rotatory power and Faraday rotation were measured in crystals of 17Bi2O3:
Ga2O3, 7Bi2O3: ZnO, Bi12TiO20, Bi12GeO20, and Bi12SiO20 in the wavelength range 400 …

Using the shooting method, one of the numerical methods to solve two-point boundary-value
problems, numerical solutions of the nonlinear coupled-wave equations in degenerate two …

The spectroscopic properties of Eu3+ doped Bi12GeO20 (BGO) sillenite bulk crystals that
were grown by the low-thermal-gradient Czochralski technique (LTG Cz) were investigated …

A red photoluminescence emission band peaking at 1.95 eV is reported for Bi12SiO20 and
Bi12GeO20. The mechanism for exciting the luminescence transition is considered, and a …

The spectroscopic properties of Eu3+-doped Bi12SiO20 (BSO) were investigated and
compared with that of Eu3+-doped Bi12GeO20 (BGO). The emission properties and the …

The absorption and transmission spectra of Bi 12 MO 20 (M= Ge, Si, Ti) sillenite crystals
were studied in the range 300–900 nm. Doping and vacuum annealing were found to have …

We report the results of investigation on the mechanism of dark conductivity and dielectric
relaxation of Bi 12 GeO 20 single crystals and dense ceramics. Alternating current electric …

The doping effect on the optical, electro-optic, and photoconductive properties of
Czochralski-grown Bi 12 MO 20 (M= Ge, Si, Ti) sillenite-structure single crystals was studied …