1. FZU – Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, 182 00, Praha 8, Czech Republic
2. University of Chemistry and Technology, Faculty of Chemical Technology, Department of Metals and Corrosion Engineering, Technická 5, Dejvice, 166 28, Praha 6, Czech Republic
3. Department of Materials Engineering and Recycling, Faculty of Materials Science and Technology, VSB – Technical University of Ostrava, 17. listopadu 2172/15, Poruba, 708 00, Ostrava, Czech Republic