Optical and Magnetic Properties of Fe Doped ZnO Nanoparticles Obtained by Hydrothermal Synthesis

Abstract

Diluted magnetic semiconductorsZn1-xFexOnanoparticles with different doping concentration (x=0, 0.01, 0.05, 0.10, and 0.20) were successfully synthesized by hydrothermal method. The crystal structure, morphology, and optical and magnetic properties of the samples were characterized by X-ray diffraction (XRD), energy dispersive spectrometer (EDS), high-resolution transmission electron microscopy (HRTEM), Raman scattering spectra (Raman), photoluminescence spectra (PL), and the vibrating sample magnetometer (VSM). The experiment results show that all samples synthesized by this method possess hexagonal wurtzite crystal structure with good crystallization, no other impurity phases are observed, and the morphology of the sample shows the presence of ellipsoidal nanoparticles. All theFe3+successfully substituted for the lattice site ofZn2+and generates single-phaseZn1-xFexO. Raman spectra shows that the peak shifts to higher frequency. PL spectra exhibit a slight blue shift and the UV emission is annihilated with the increase ofFe3+concentration. Magnetic measurements indicated that Fe-doped ZnO samples exhibit ferromagnetic behavior at room temperature and the saturation magnetization is enhanced with the increase of iron doping content.

Room Temperature Ferromagnetic and Optical Properties of Chrome Doped ZnS Nanorods Prepared by Hydrothermal Method

“…The lattice constants of the doped ZnS are smaller than that of pure ZnS, and the lattice constants and and their interplanar distance of doped ZnS decrease with the increase of Cr doped content, reaching minimum for 3% Cr. It can be attributed that the ionic radius of the Cr 3+ (0.69Å) is smaller than that of the Zn 2+ (0.74Å), which revealed that Cr ions occupy Zn ions sites in the wurtzite structure, causing lattice distortion [20].…”

The Synthesis of Zinc Oxide/Carbon Spheres Nanocomposites and Field Electron Emission Properties

“…This mode was shifted to a higher number. It might due to the increase of the stress or defect in the ZnO crystal [38]. Moreover, I D /I G ratio of the CS increased to be 0.91 (ZnO-coated CS) and 0.88 (CS-coated ZnO) after being composited with ZnO.…”

Structure and Hyperfine Interactions of Fe-Doped ZnO Powder Prepared by Co-Precipitation Method

“…The magnetic properties of these materials depend strongly on the synthesis method, conditions of preparations, etc. They may exhibit room temperature ferromagnetism (RTFM) [1][2][3], spin-glass behavior [4], superparamagnetic properties [5], and the Curie-Weiss paramagnetism with dominating antiferromagnetic interactions [6]. Due to the poor reproducibility by using different preparation methods or the poor resolutions of the commonly used structural characterization techniques, there are many different interpretation of the origin of magnetism in DMSs.…”

“…Due to the poor reproducibility by using different preparation methods or the poor resolutions of the commonly used structural characterization techniques, there are many different interpretation of the origin of magnetism in DMSs. For example, the observed in these compounds RTFM very often is explained by defects; on the other hand, nanosized inclusions of magnetic oxides or metals are usually responsible for the ferromagnetic behavior of the material [1][2][3].…”