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Magnetic properties of the Fe-MgO interface studied by Mössbauer spectroscopy
| Content Provider | Semantic Scholar |
|---|---|
| Author | Balogh, József Dézsi, I. Fetzer, Cs. Korecki, J'ozef Kozioł-Rachwał, Anna Mlynczak, Ewa Nakanishi, A. |
| Copyright Year | 2013 |
| Abstract | ossbauer spectroscopy. The temperature dependence of the spectra indicates superparamagnetic behavior below 8 ML nominal thickness of the Fe layer signaling a cluster-type growth mode. The low-temperature hyperfine fields are consistent with a model that defines two types of metallic Fe atoms: bulklike and interfacial ones. Formation of FeO or (Fe,Mg)O at the interface layer is not observed. The sample with a 4-ML Fe layer when grown over a cleaved MgO substrate shows almost perfect perpendicular magnetization, as locally probed at 15 K by the hyperfine magnetic field, while random magnetization orientation and lower blocking temperature is observed in the case of a polished substrate. The perpendicular anisotropy observed at low temperature is attributed to mechanical stresses arising from the epitaxial relation and the different temperature dilatation of the subsequent layers. |
| Starting Page | 174415 |
| Ending Page | 174415 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1103/PhysRevB.87.174415 |
| Volume Number | 87 |
| Alternate Webpage(s) | https://www.szfki.hu/~baloghj/PDF/PRB_87_2013_174415.pdf |
| Alternate Webpage(s) | https://doi.org/10.1103/PhysRevB.87.174415 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
