Structural, optical and magnetic properties of undoped NiO and Fe-doped NiO nanoparticles synthesized by wet-chemical process

Nanocrystalline nickel oxide (NiO) and ferrous doped NiO dilute magnetic nanoparticles have been prepared by wet-chemical method. The structural, composition, morphology, UV absorption and magnetic analysis of the prepared samples are characterized by XRD, FESEM, HRTEM, UV Spectra and VSM. XRD confirms the FCC phase formation. The FESEM and HRTEM used to found the structural parameters. The U–V absorption measurement shows the strong absorption at 313.24nm and 307.9nm for undoped NiO and Fe-doped NiO nanoparticles. The magnetic properties of these nanoparticles confirming the ferromagnetic behaviour at room temperature and has been attributed due to particle size effect. •Undoped NiO and Fe-doped NiO nanoparticles have been successfully synthesized by wet-chemical method.•The XRD study confirms the formation of NiO and Fe-doped NiO nanoparticles.•The UV spectra of Fe-doped NiO nanoparticles are shift towards the lower wavelength region as compared to that of undoped NiO nanoparticles.•The M−H curves show the week ferromagnetic phase for undoped NiO and increased for Fe-doped NiO.