Probing phase formation and structural ordering in Ba3ZnNb2O9 films using confocal Raman microscopy

In this paper we investigated the phase formation and structural ordering in spin-coated Ba3ZnNb2O9 perovskite films using confocal Raman microscopy. The films were deposited through polyester resins obtained from a polymeric precursor. Initially, the films were characterized by X-ray diffraction and atomic force microscopy. Raman spectroscopy confirmed the crystalline structure of the main phase, as well as its partially disordered feature. Raman mappings were employed to probe the secondary phase distribution in the films, and to determine the calcining time-dependent film thicknesses.