Magnetic Properties of Fe3O4 Films on Fe(001) |
| M. Zając a, D. Aernout a, K. Freindl b, K. Matlak a, N. Spiridis b, M. Ślęzak a, T. Ślęzak a and J. Korecki a, b
a Faculty of Physics and Applied Computer Science AGH University of Science and Technology Al. Mickiewicza 30, 30-059 Kraków, Poland b Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences Niezapominajek 8, 30-239 Kraków, Poland |
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| Received: 4 07 2007; |
| We investigated the magnetic properties of ultrathin magnetite films deposited directly on MgO(001) and on a Fe(001) buffer layer. In both cases the magnetite surface structure could be identified using low energy electron diffraction. The conversion electron MÖssbauer spectroscopy measurements proved that, for magnetite films deposited on the Fe buffer, superparamagnetic relaxation was strongly suppressed. The effect of a Fe overlayer on the magnetite film grown directly on MgO is considerably weaker. Longitudinal Kerr magnetometry indicated the presence of the ferromagnetic interfacial coupling between Fe and magnetite films. We conclude that the density of antiphase boundaries for films grown on the Fe buffer is lower than that of Fe3O4/MgO films. |
| DOI: 10.12693/APhysPolA.112.1318 PACS numbers: 75.75.+a, 76.80.+y |