Magnetic properties of (FeAu)n alloys

Jerzy Jaworowicz 1,5Andrzej Maziewski 1Iosif Sveklo 1Maria Tekielak 1Vitalii Zablotskii 1,2Tomasz Ślęzak 3Nika Spiridis 4Józef Korecki 3

1. University of Białystok, Institute of Experimental Physics, Lipowa 41, Białystok 15-424, Poland
2. Institute of Physics ASCR, v.v.i., Na Slovance 2, Prague CZ-18221, Czech Republic
3. AGH University of Science and Technology, Faculty of Physics and Nuclear Techniques (AGH), al. Mickiewicza 30, Kraków 30-059, Poland
4. Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences (ICSC), Niezapominajek 8, Kraków 30239, Poland
5. Laboratoire de Physique des Solides Université Paris-Sud (CNRS UMR8502), Orsay 91405, France

Abstract

Magnetic domain structures of FeAu superlattices are studied by experiment and modelling. The domain period, magnetic hysteresis loops and magnetic susceptibility were measured for a wide range of the film thickness, 3- 50 monolayers. Domain structures were observed by utilizing a magnetooptical installation based on the Kerr effect (MOKE) and magnetic force microscope (MFM). Typical MFM images of domain structures are shown in Fig.1. It is found that the zero-field domain period is inversely proportional to the saturation field. The thickness dependence of the domain period is well described by the classical domain models using the modified relationships for the domain wall energy density [1].

Fig1. MFM domain image  for the 30 monolayers FeAu.

[1] M. Kisielewski, A. Maziewski, T. Polyakova, and V. Zablotskii. Phys. Rev. B 69, 184419 (2004).

 

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Presentation: Poster at E-MRS Fall Meeting 2007, Acta Materialia Gold Medal Workshop, by Jerzy Jaworowicz
See On-line Journal of E-MRS Fall Meeting 2007

Submitted: 2007-05-21 16:34
Revised:   2009-06-07 00:44