1. Institute for Materials Research IMO; Hasselt University; Wetenschapspark 1 3590 Diepenbeek Belgium
2. Electron Microscopy for Materials Science EMAT; Antwerp University; Groenenborgerlaan 171 2020 Antwerp Belgium
3. Laboratory for Solid State Physics and Magnetism; Catholic University Leuven; Celestijnenlaan 200 D 3001 Leuven Belgium
4. Department of Physics and Astronomy; Catholic University Leuven; Celestijnenlaan 200 D 3001 Leuven Belgium