| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1799546 | Journal of Magnetism and Magnetic Materials | 2014 | 4 Pages |
•(Mn, N) codoped ZnO films with various Mn contents were prepared.•Room-temperature ferromagnetism was observed.•Magnetic moments reach a limit under a certain N doping condition.•Magnetic interactions between Mn dopants in the presence of N in ZnO were studied by first-principles calculations.•Ferromagnetic coupling mechanism of (Mn, N) codoped ZnO has been discussed.
In this paper, by investigating the magnetic properties of (Mn, N) co-doped ZnO films with various Mn doping contents, we found that the total magnetic moments of the samples would reach a limit under a certain N doping condition even if more Mn ions were incorporated into the ZnO lattice. Based on first-principles calculations, we propose that the unique magnetic interactions between Mn2+ dopants in the presence of nitrogen and the very low solubility of substitutional N relative to Mn in ZnO are responsible for the experimental observation.
