Micro-Raman scattering of KTP (KTiOPO4) nanocrystallites synthesized by modified sol–gel Pechini method

KTP nanocrystallites were successfully grown by the modified Pechini method which uses a process for the preparation of the precursor polymeric resin. The products were characterized and examined by back-scattering micro-Raman spectroscopy, X-ray diffraction, FTIR transmission spectroscopy and near normal incidence IR reflection spectroscopy analysis. From the latter study and by using Kramers–Kronig analysis and dispersion relations, we have calculated and reported the typical behavior of real parts of refractive and dielectric indices in the spectral region of 400–4000 cm−1.