1. Triebenberg
Laboratory, Institute of Structural Physics, Technische Universität Dresden, 01062 Dresden, Saxony, Germany
2. Laboratorio
de Microscopías Avanzadas (LMA), Instituto de Nanociencia de
Aragón (INA), Universidad de Zaragoza, 50018 Zaragoza, Spain
3. Transpyrenean
Associated Laboratory for Electron Microscopy (TALEM), CEMES INA CNRS-Universidad de Zaragoza, 31400 Toulouse, France
4. CEMES-CNRS 29, rue Jeanne
Marvig, B.P. 94347 F-31055, Toulouse Cedex, France
5. EMAT, University of Antwerp, Groenenborgerlaan
171, 2020 Antwerp, Belgium
6. Thin
Film Magnetism Group, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, CB3 0HE, Cambridge U.K.
7. Instituto
de Ciencia de Materiales de Aragón (ICMA), Departamento de
Física de la Materia Condensada, Universidad de Zaragoza-CSIC, Pedro Cerbuna 12, 50009 Zaragoza, Spain