Magnetic Properties of Ni-Zn Ferrite Prepared with the Layered Precursor Method

  • Received Date: August 20, 2010
  • Published Date: October 31, 2010
  • We prepare NiZnFe2O4 soft magnetic ferrites with different molar ratios with the layered precursor method and investigate their magnetic properties. In the layered precursor, metal ions are scattered on the layer plate in a certain way on account of the effect of lowest lattice energy and lattice orientation. After high temperature calcinations, spinel ferrites with uniform structural component and single magnetic domain can be obtained, and the magnetic property is improved greatly. NiZnFe2O4 ferrites prepared have the best specific saturation magnetization of 79.15 emug−1, higher than that of 68 emug−1 prepared by the chemical co-precipitation method and that of 59 emug−1prepared by the emulsion-gel method. Meanwhile the coercivity of NiZnFe2O4 ferrites prepared by layered precursor method is 14 kAm−1, lower than that of 50 emug−1 prepared by the co-precipitation method and that of 59 emug−1 prepared by the emulsion-gel method.
  • Article Text

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