1. International Research Centre MagTop, Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, PL-02-668 Warsaw, Poland
2. Center of Microelectronics and Nanotechnology, University of Rzeszow, Institute of Materials Science and Engineering, Al. Rejtana 16c, PL-35-959 Rzeszow, Poland
3. Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, PL-02-668 Warsaw, Poland