Study of silver and iron nanoparticles using Raman scattering spectroscopy

The article investigates silver and iron nanoparticles using Raman scattering spectroscopy across a temperature range of 223-328 K. For Ag nanoparticles, spectral lines associated with carbon compounds were detected, which is attributed to their interaction with the surrounding environment. In the high-frequency region (2780-3200 cm⁻¹), slight temperature shifts in the lines were observed, indicating the absence of phase transitions.The spectra of Fe nanoparticles revealed characteristic peaks of iron oxide (Fe₂O₃) in the low-frequency range (60-900 cm⁻¹). The results confirm the high structural stability of the studied nanomaterials under temperature variations. The linear nature of the spectral line shifts suggests strong resistance of the particles to thermal effects. These findings are significant for the development of thermally stable nanomaterials and their application in various technological processes.