Magnetic properties of Hydrogenated Li and Co doped ZnO nanoparticles

Details Magnetic properties of Hydrogenated Li and Co doped ZnO nanoparticles Magnetic properties of Hydrogenated Li and Co doped ZnO nanoparticles

2006-10-05

arxiv.org/abs/cond-mat/0610145v1

Physics

Condensed Matter

Materials Science

10 pages, 3 figures

Scientific paper

10.1063/1.2387877

The effect of hydrogenation on magnetic properties of Zn0.85Co0.05Li0.10O nanoparticles is presented. It was found that the sample hydrided at room temperature (RT) showed weak ferromagnetism (FM) while that hydrided at 400oC showed robust ferromagnetism at room temperature. In both cases reheating the sample at 400oC in air converts it back into paramagnetic state (P) completely. The characterization of samples by X-ray and electron diffraction (ED) showed that room temperature ferromagnetism observed in the samples hydrogenated at RT is intrinsic in nature whereas that observed in the samples hydrogenated at 400oC is partly due to the cobalt metal clusters.

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