Thickness stabilization of ferromagnetic order of compounds
| Autor: | M. Benakki, M. Zemirli, Claude Demangeat, A. Mokrani, A. Lounis |
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| Rok vydání: | 2010 |
| Předmět: |
Magnetic moment
Condensed matter physics Chemistry Ab initio 02 engineering and technology General Chemistry Electronic structure 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Inductive coupling Condensed Matter::Materials Science Magnetization Ferromagnetism 0103 physical sciences Physics::Atomic and Molecular Clusters Materials Chemistry Condensed Matter::Strongly Correlated Electrons Density functional theory Physics::Atomic Physics Thin film 010306 general physics 0210 nano-technology |
| Zdroj: | Solid State Communications. 150:2201-2205 |
| ISSN: | 0038-1098 |
| Popis: | Electronic and magnetic properties of ultra-thin films of FeGe2 compounds have been investigated using ab initio density functional theory (DFT). In the bulk environment we obtained anti-ferromagnetic coupling between Fe atoms and no magnetic polarization on Ge atoms. Besides this ground state configuration a metastable solution is obtained with a ferromagnetic coupling between Fe atoms and anti-ferromagnetic coupling between Fe and Ge. Concerning the thin films, the magnetic coupling between Fe atoms depends on the film thickness. Ferromagnetic order is obtained in the case of an ultra-thin film and a transition to anti-ferromagnetic coupling is observed when we increase the film thickness. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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