Current Applied Physics, Vol.19, No.3, 351-355, 2019
Laser-induced crystalline phase transition from rutile to anatase of niobium doped TiO2
The investigation of the laser-induced crystalline phase transition of niobium doped TiO2 single crystal is discussed in this paper. The TiO2 single crystal was studied by using Raman spectroscopy and electron backscatter diffraction before and after irradiation by 266 nm ns laser at the threshold intensity of 56 MW/cm(2). Experimental results show an evidence of anatase phase formation from ruffle single crystal. Moreover, the analysis of the experimentally obtained and calculated crystallographic texture indicates that the converted TiO2 layer has a polycrystalline structure with the preferred orientations. According to the Raman spectroscopy the amount of anatase phase increases with the number of laser pulses indicating the dose-dependent conversion process.