Effects of Mg on the sintered properties of(Ni_(0.30)Cu_(0.20)Zn_(0.50))Fe_2O_4 ferrites

A series of(Ni0.30Cu0.20Zn0.50)Fe2O4·xMg(x=0,0.01,0.02,0.03,0.04) nanopowders were synthesized by microwave-hydrothermal method,and sintered into dense-ceramics under the conditions of 900℃/4h,Mg doped low-temperature sintered Ni-Cu-Zn ferrites were studied by phase formation,densification process and influence of Mg content on microstructure and electrical and magnetic properties.Study shows,within a limited Mg content range of x=0.01 to 0.04,Mg content can influence lattice parameters of samples.Mg doping leaded to an increase in density.The microstructures,electrical and magnetic properties of samples were improved with Mg doping.Study also found that crystallite size,initial permeability,resistivity and quality factor were higher when the Mg content was 0.04.