1. Institute of Ceramics and Building Materials; Department of Ceramic Technology; Postepu 9 Street 02-676 Warsaw Poland
2. AGH University of Science and Technology; Faculty of Physics and Applied Computer Science; Department of Solid State Physics; Adam Mickiewicz 30 Avenue 30-059 Cracow Poland
3. Institute of Electron Technology; Department of Microelectronic; Zablocie 39 Street 30-701 Cracow Poland
4. Warsaw University of Technology; Faculty of Physics; Koszykowa 75 Street 00-662 Warsaw Poland
5. University of Warsaw; Faculty of Physics; Department of Solid State Physics; Pasteura 5 Street 02-093 Warsaw Poland