1. Institut des Matériaux Jean Rouxel (IMN), Université de Nantes, CNRS UMR 6502, F-44322 Nantes, France
2. Institut Néel, CNRS-UJF,
BP 166, F-38042 Grenoble, France
3. Laboratoire de simulation atomistique (L Sim), SP2M, INAC, CEA-UJF, F-38054 Grenoble, France
4. ICN2 - Institut Català de Nanociència i Nanotecnologia, Campus UAB, Bellaterra 08193, Barcelona, Spain
5. ICREA - Institució Catalana de Recerca i Estudis Avancats 08010, Barcelona, Spain
6. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
7. Unité Mixte de Physique CNRS-Thales, 91767 Palaiseau, and Université Paris-Sud F-91405, Orsay, France
8. Department
of Materials Science and Engineering, University of Ghana, P.O. Box 24, Legon, Accra, Ghana
9. Department
of Chemistry, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom
10. School
of Electrical, Electronic and Computer Engineering, University of Newcastle, Newcastle
upon Tyne NE1 7RU, United Kingdom