Giant magnetic coercivity and ionic superlattice nano-domains in Fe0.25TaS2 Y. J. Choi, S. B. Kim, T. Asada, S. Park, Weida Wu, Y. Horibe and S-W. Cheong EPL, 86 3 (2009) 37012 Published online: 21 May 2009 DOI: 10.1209/0295-5075/86/37012