1. Jülich Center for Neutron Science JCNS and Peter Grünberg Institut PGI; JARA-FIT, Forschungszentrum Jülich GmbH; 52425 Jülich Germany
2. Faculté des Sciences; Université de Liège; 4000, Liège Belgium
3. Fraunhofer Institute for Physical Measurement techniques IPM; Heidenhofstrasse 8; 79110 Freiburg Germany
4. European Synchrotron Radiation Facility; 38043 Grenoble France
5. Materials Science and Technology Division; Oak Ridge National Laboratory, Oak Ridge; Tennessee 37831 USA