Microstructural and magnetic properties of Fe/Cr-substituted ferrite composites N. Viart, G. Pourroy, J.-M. Grenèche, D. Niznansky and J. Hommet Eur. Phys. J. AP, 12 1 (2000) 37-46 Published online: 15 October 2000 DOI: 10.1051/epjap:2000169