Anomalous Hall effect in Fe/Gd bilayers W. J. Xu, B. Zhang, Z. X. Liu, Z. Wang, W. Li, Z. B. Wu, R. H. Yu and X. X. Zhang EPL, 90 2 (2010) 27004 Published online: 11 May 2010 DOI: 10.1209/0295-5075/90/27004