1. IFM, Linköping University, SE 58183 Linköping, Sweden
2. SKF Research and Development Centre, 3430 DT Nieuwegein, The Netherlands
3. Dipartimento di Matematica e Fisica “E. De Giorgi,” Università del Salento and Istituto Nazionale di Fisica Nucleare, 73100 Lecce, Italy
4. Department of Materials Science, University of Patras, 26504 Patras, Greece