Coercivity mechanisms in lithographed antidot arrays F. García-Sánchez, E. Paz, F. Pigazo, O. Chubykalo-Fesenko, F. J. Palomares, J. M. González, F. Cebollada, J. Bartolomé and L. M. García EPL, 84 6 (2008) 67002 Published online: 23 December 2008 DOI: 10.1209/0295-5075/84/67002