O objetivo desta tese foi a caracterização de materiais fotocondutores e fotorrefrativos
utilizando técnicas ópticas e elétricas. A propriedade mais importante nestes materiais é a …

A produção, caracterização elétrica e dielétrica de corpos cerâmicos de titanato de bismuto
(Bi12TiO20-BTO) são relatados neste trabalho. Este material tem potencial para diversas …

This work presents the systematic results of studies concerning the sintering of the
Bi12TiO20 (BTO) aiming the production of transparent ceramic samples. All that because the …

We describe the effect of radiation of different wavelengths in the visible and near infrared
range over photochromism, bleaching and photorefractive recording on undoped Bi12TiO20 …

The optical absorption spectra and photoelectric properties of undoped and doped (CaF,
CdO, ZnO, Ga 2 O 3, Fe 2 O 3, Bi 24 FePO 40, and Bi 24 AlPO 40) Bi 12 TiO 20 single …

Bi 12 TiO 20 single crystals were grown from the various melt compositions (5.0-10.0 mol.%
TiO 2). The stoichiometric dependence of optical and photoconductive properties of Bi 12 …

Bismuth tellurite, Bi2TeO5, here labeled BTeO has a lot of properties like improper
ferroelectricity, photochromic, photorefractive, with two optical axes large optical window and …

The influence of photoconductivity upon operation of a Bi 12 TiO 20-based optical voltage
sensor is reported. We have demonstrated, that the presence of photoconductivity defines …

We report a new setup for the measurement of photoconductivity that is based on discrete
quasimonochromatic light-emitting diodes. This setup allows new possibilities combining …

12 TiO 20. The first two can be measured by simple and classical methods, but the
coexistence of optical activity, electrogyration, field-induced linear birefringence, and …