Synthesis and characterization of TM-doped CuO nanosheets (TM = Fe, Mn)

In this work, the structural, magnetic and optical properties of pure CuO and double-substitution by Fe, and Mn ions prepared by the hydrothermal method has been studied. Quite a few techniques such as X-ray diffraction (XRD) coupled with Rietveld refinement analysis, energy dispersive X-ray (EDX), and Field Emission Scanning Electron Microscopy (FESEM) analyses have been used to study the structural and morphological properties. The results showed that the samples were crystallized in polycrystal in monoclinic and nanosheet structure. Using the UV- vis analysis, the optical bandgap of the samples was obtained. For investigating the magnetic properties, Vibrating-sample magnetometry (VSM) was performed, which confirmed the paramagnetic behavior of pure CuO and the weak ferromagnetic behavior for the other samples. The Ferromagnetism behavior of samples was considered based on the F-center exchange (FCE) mechanism through oxygen vacancy defects. The magnetic susceptibility of the samples was also obtained by fitting an experimental formula with the magnetization (M) vs. the applied field (H) curves of the samples in the high applied magnetic field.

Automated summary

This work investigated the structural, magnetic, and optical properties of pure CuO and double-substitution by Fe and Mn ions prepared by the hydrothermal method. Various techniques were used to study the structural and morphological properties. The results showed that the samples exhibited a polycrystalline monoclinic and nanosheet structure. The optical bandgap of the samples was obtained using UV-vis analysis. Vibrating-sample magnetometry revealed paramagnetic behavior in pure CuO and weak ferromagnetic behavior in the other samples.