1. Mines Saint-Etienne, Center CMP, Department FEL, F-13541 Gardanne, France
2. Mines Saint-Etienne, Univ Lyon, CNRS, UMR 5307 LGF, Center SMS, F-42023 Saint-Etienne, France
3. Center of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, Nám. Cs. Legií 565, 53002 Pardubice, Czech Republic
4. Central European Institute of Technology, Brno University of Technology, Purkyňova 123, Brno, Czech Republic
5. Al-Farabi Kazakh National University, Center of Physical-Chemical Methods of Research and Analysis, Almaty, Tole bi str., 96A, Kazakhstan