Structure related magnetic properties of MnZn ferrite with ultra-fine grain structureJ. Moulin, F. Mazaleyrat, Y. Champion, P. Langlois, M. Lécrivain, J. M. Grenèche, D. Michel and R. BarruéEur. Phys. J. AP, 23 1 (2003) 49-54DOI: https://doi.org/10.1051/epjap:2003040