‘In-situ’ ink-jet printed Fe-doped MgO thin films with tunable ferromagnetism
| Autor: | Wang Guo, Anastasia V. Riazanova, Mukes Kapilashrami, Tianli Li, Jinghua Guo, K. V. Rao, Mei Fang, Lyubov Belova |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Spintronics Annealing (metallurgy) business.industry Magnetism Doping Wide-bandgap semiconductor General Physics and Astronomy 01 natural sciences 010305 fluids & plasmas Condensed Matter::Materials Science Crystallinity Ferromagnetism Condensed Matter::Superconductivity 0103 physical sciences Optoelectronics Condensed Matter::Strongly Correlated Electrons Thin film 010306 general physics business |
| Zdroj: | Chinese Journal of Physics. 67:398-404 |
| ISSN: | 0577-9073 |
| Popis: | Magnetism in wide band gap materials is of great interests for future spintronic device applications. We prepared MgO and Fe-doped MgO films ‘in-situ’ on substrates by inkjet printing, and investigated the ferromagnetism tuned by the doping of Fe, the annealing temperature and the film thickness. It is found that the Fe-doping improves the crystallinity of the films with lattice structure changed by annealing temperature. The saturation magnetization (Ms) of the films enhanced by ~5 times comparing with the pure MgO thin film of similar thickness (~90 nm), because of both the long-range ordering of localized 3d electrons in Fe and the defects induced magnetism. The Ms at 5 K decreases with the film thickness, which is mainly attributed to the interface induced ferromagnetism. The Fe-doped MgO films with ferromagnetism in this work can be used in future spintronic devices. |
| Databáze: | OpenAIRE |
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