Effect of Doping with Nb2O5 on the Magnetic and Structural Properties of Mn-Zn Ferrite J. Neamtu, D. Barb, M.I. Toacsen, M. Morariu et F. Vasiliu J. Phys. IV France, 07 C1 (1997) C1-73-C1-74 DOI: 10.1051/jp4:1997117