Magnetic and Structural Characterizations of Pb and Sc Ions Doped MgO Nanoparticles by Modified Pechini Method

EasyChair Preprint no. 4839

Abstract

The Room Temperature Ferromagnetic (RTFM) were discussed in the present paper of the undoped and the doped samples with different content of Pb²⁺ ions and Sc⁺³ ions. The modified pechini method was used to prepare the pure and the doped samples (Mg_0.097Pb_(0.03-y)Sc_yO)-NPs, where (0.01 ≤ y ≤ 0.03). The structural, morphological, chemical composition and magnetic properties of the samples were characterized by X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Energy Dispersive Spectroscopy (EDS) and Vibrating Sample Magnetometer (VSM) respectively. The XRD patterns showed that the synthesized materials have a single set of peaks, which corresponding the cubic phase of MgO-NPs. The lattice parameter, the interplanner spacing and the crystallite size were varied according to different dopant concentration of Sc⁺³ ions and Pb²⁺ ions in the MgO-NPs host lattice for doped samples. Furthermore, the intensity was reduced. The morphology of pure and doped samples showed small spherical nanoparticles with particle size (22.87-19.725nm) by employing the FE-SEM. The purity of all the samples was confirmed by using EDS spectroscopy. Magnetic measurements by (VSM) revealed that all the samples offer room temperature ferromagnetism (RTFM). The saturation magnetism of (Ms) was found to be varied as a function of doping concentration, which may be attributed to local magnetization supported by F-center mechanism. The maximum (Ms) was found for the Mg_0.97Sc_0.03O sample. The obtained results suggest that both Pb²⁺ ions and Sc⁺³ ions doping and oxygen vacancies play an remarkable role in the development of room temperature ferromagnetism, which may be convenient for spintronic application.

Keyphrases: Doping, MgO NPs, PBO, Pechini, RTFM, SCO, VSM

@Booklet{EasyChair:4839,
  author = {Israa A. Najem and Fadhil Abd Rasin and Shaker J. Edrees},
  title = {Magnetic and Structural Characterizations of Pb and Sc Ions Doped MgO Nanoparticles by Modified Pechini Method},
  howpublished = {EasyChair Preprint no. 4839},

  year = {EasyChair, 2020}}