1. Department of Inorganic Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava SK-81237, Slovakia
2. Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46 Olomouc, Czech Republic
3. Central European Institute of Technology, Brno University of Technology, Purkyňova 123, 61200 Brno, Czech Republic
4. Institute of Physics of Materials, Czech Academy of Sciences, Žižkova 22, 61662 Brno, Czech Republic
5. Institute of Physics, Slovak Academy of Sciences, 84511 Bratislava, Slovakia
6. Centre of Excellence for Advanced Materials Application, 84511 Bratislava, Slovakia
7. Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 04154 Košice, Slovakia