1. Department of Mathematics, Physics and Electrical Engineering, Northumbria University, Ellison Place, NE1 8ST Newcastle upon Tyne, United Kingdom
2. School of Chemistry, University of Bristol, Cantocks Close, BS8 1TS Bristol, United Kingdom
3. Department of Physics, SUPA, Strathclyde University, G4 0NG Glasgow, United Kingdom
4. M.N. Miheev Institute of Metal Physics of the UB RAS, 18 S. Kovalevskoy St., 620108 Ekaterinburg, Russia
5. Ural Federal University, 19 Mira St., 620002 Ekaterinburg, Russia
6. Institute of Solid-State Chemistry of the UB RAS, 620990 Ekaterinburg, Russia
7. Faculty of Physics, University of Duisburg-Essen, Forsthausweg 2, 47057 Duisburg, Germany
8. H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, BS8 1TL Bristol, United Kingdom
9. Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany