1. Department of Materials Science, Montanuniversität Leoben 1 , Jahnstraße 12, 8700 Leoben, Austria
2. Department of Materials Design, Institute of Hydrogen Technology, Helmholtz-Zentrum Hereon GmbH 2 , 21502 Geesthacht, Germany
3. Deutsches Elektronen-Synchrotron DESY 3 , Notkestr. 85, 22607 Hamburg, Germany
4. Erich Schmid Institute of Materials Science, Austrian Academy of Sciences 4 , Jahnstraße 12, 8700 Leoben, Austria