Exchange bias studies of NiFe/FeMn/NiFe trilayer by ion beam etching V. K. Sankaranarayanan, D. Y. Kim, S. M. Yoon, C. O. Kim and C. G. Kim Eur. Phys. J. B, 45 2 (2005) 203-206 Published online: 08 March 2005 DOI: 10.1140/epjb/e2005-00055-1