1. Department of Materials Science WW4‐LKO Friedrich‐Alexander‐University of Erlangen‐Nuremberg Martensstraße 7 91058 Erlangen Germany
2. Regional Centre of Advanced Technologies and Materials Šlechtitelů 27 Olomouc 78371 Czech Republic
3. Department of Experimental Physics Faculty of Science Palacký University 17. listopadu 1192/12 Olomouc 77900 Czech Republic
4. Department of Chemistry Faculty of Science King Abdulaziz University P.O. Box 80203 Jeddah 21569 Saudi Arabia