Xu, C.; Hui, P. M.; Zhang, L. F.; Ma, Y. Q.; Zhou, J. H.; … - In: The European Physical Journal B - Condensed Matter and … 46 (2005) 4, pp. 475-480
The out-of-plane hysteresis loops of small arrays of magnetic nanoparticles, under the influence of an external field applied perpendicular to the array and the dipolar interaction are investigated. The particles are assumed to have a perpendicular anisotropy energy that tends to align the...