@article{escidoc:0534, title = {{Overcoming the Dipolar Disorder in Dense CoFe Nanoparticle Ensembles: Superferromagnetism}}, author = {Bedanta, S. and Eim\"uller, T. and Kleemann, W. and Rhensius, J. and Stromberg, F. and Amaladass, E. and Cardoso, S. and Freitas, P. P.}, journal = {{Physical Review Letters}}, volume = {98}, year = {2007}, doi = {10.1103/PhysRevLett.98.176601} }