1. Nanostructured Materials, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-58183, Sweden
2. Université de Lorraine, CNRS, IJL, F-54000 Nancy, France
3. Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-58183, Sweden
4. Functional Materials, Department of Materials Science, Saarland University, Saarbrucken DE-66123, Germany
5. SECO Tools AB, Fagersta SE-73782, Sweden