Microstructural analysis, dielectric properties and room temperature magnetic ordering of Pr-doped ZnO nanoparticles

Investigating the Vibrational, Magnetic and Dielectric Properties, and Antioxidant Activity of Cerium Oxide Nanoparticles

“…The coercivity (Hc) values for CeO-2 were 7.7 Oe at 100 K and 14.9 Oe at 300 K. These values much lower than those for the CeO-1 sample (116.9 Oe, 300 K). In this case, the results suggest the existence of a mixed phase of ferromagnetic and paramagnetic in the CeO-2 sample, in agreement with previous papers [60,61]. It was demonstrated that the presence of surface oxygen deficiency determines the magnetic ordering within cerium oxide nanostructures [11,13,18,62,63].…”

Investigation of physicochemical characteristics of Dy3+ modified ZnO nanoparticles

“…Toghan et al prepared Y 3+ doped ZnO NPs and observed enhancement in grain boundary resistance due to Y 3+ doping in host ZnO [14]. Bhakta et al prepared Pr 3+ doped ZnO NPs and observed enhancement in dielectric constant with rare earth ion Pr 3+ doping in the ZnO crystal lattice [15]. Various methods have been developed to synthesize pristine and doped ZnO nanoparticles, including the wet chemical technique [16], sol-gel method [17], chemical co-precipitation method [18], magnetron reactive sputtering [19], solid-state reaction method [20], and spray pyrolysis [21], etc.…”