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- Title
INVESTIGATIONS OF STRUCTURAL VIBRATIONAL AND OPTICAL PROPERTIES OF MACKINAWITE NANOSTRUCTURED FeS FILM.
- Authors
HURMA, TULAY; AKSAY, SABIHA
- Abstract
Iron sulphide nanocrystalline (FeS NCs) may have significant potential for applications in many areas. Ultrasonic spray pyrolysis (USP) method is used to deposit mackinawite FeS NCs film on glass substrate at 335 oC in this study. The film was characterized by vibrational (FTIR and Raman) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-vis spectra. The observed diffraction peaks at 2θ angles 28.12° and 50.45° correspond to the lattice planes (103) and (112) respectively. The crystallite size was calculated to be around 10 nm by using the Scherrer equation with the peak corresponding to the (112) plane. Raman spectrum revealed four peaks placed in the region of 200-750 cm-1 due to mackinawite FeS phase. FTIR spectrum revealed two peaks at 649 cm-1 and 827 cm-1 that are attributed to stretching frequency of FeS. Optical band gap of the FeS film was determined to be 2.52 eV. Refractive index, extinction coefficient and optical conductivity of this film were determined using transmittance and reflectance spectra.
- Subjects
OPTICAL properties of nanostructured materials; IRON sulfides; MACKINAWITE; FOURIER transform infrared spectroscopy; X-ray diffraction; THIN films; REFRACTIVE index
- Publication
Romanian Journal of Materials / Revista Romana de Materiale, 2018, Vol 48, Issue 1, p18
- ISSN
1583-3186
- Publication type
Article