1. Materials Research and Technology Department, Luxembourg Institute of Science and Technology, 41 rue du Brill, L-4422 Belvaux, Luxembourg
2. Department of Physics and Materials Science, University of Luxembourg, 41 rue du Brill, L-4422 Belvaux, Luxembourg
3. Inter-institutional Research Group Uni.lu–LIST on Ferroic Materials, 41 rue du Brill, L-4422 Belvaux, Luxembourg