Investigation of scattering caused by electric field in TiO2 nanocrystals

A combination of external Electric Field and Raman backscattering, as a new method called Electric Field Induced Raman scattering, has been used to study TiO2 Nanocrystallites. This method can be widely used to obtain phononic properties of materials. In this article, we report the fabrication of TiO2 Nanoparticles and their restriction in our lab by a simple modified sol-gel process. Moreover, the TiO2 Nanocrystallites synthesized were characterized by X-ray Diffraction and back scattering Raman techniques. Furthermore, the effects of an external direct current electric field on the lattice internal and external modes of the Nanocrystallites were investigated by the recorded in situ Raman data. Our results show that the applied external electric field can make a strong interaction and widening of the Raman active modes, the intensity amplifying and possible peak shifts in the Raman spectra can be observed.In this article, an attempt is made to investigate the effect of electric field on nanoparticles.