Magnetic and optical properties of Cu 1−x Fe x O nanosheets prepared by the hydrothermal method

摘要: Cu1−xFexO (x = 0, 0.025, 0.05, 0.075, and 0.1) nanosheets can be sucessfully prepared by hydrothermal method at 160 °C for 3 h in a solution of 0.5 M KOH. X–ray diffraction results indicated monoclinic phase crystalline CuO nanosheets. Crystallite sizes lattice constants were determined Rietveld refinements the peaks. The crystallite significantly decreased from 28.46 to 21.71 nm with increase Fe content. Scanning electron microscopy transmission revealed plate-like shapes estimated width length range 50–170 100–275 nm, respectively. optical band gaps (E g) studied ultraviolet-visible spectroscopy are found decrease 3.625 eV undoped sample 3.430 eV Fe–doped x = 0.1. magnetic properties samples vibrating magnetometry paramagnetic behavior ferromagnetic nanostructures magnetization strongly depended on ferromagnetism Fe-doped was discussed base F-center exchange mechanism via oxygen vacancy defects. This figure shows doped synthesized KOH SEM micrograph, showing morphology. It seen this that induced doping ion. Moreover, content, suggesting may applied as photocatalytic materials. Ferromagnetism is proposed originated coupling Fe3+ promoted samples.