| Title |
Research Paper - Electronic , Magnetic and Optical Materials - : Magnetic properties of MnZn - ferrite prepared by Hydrothermal process |
| Authors |
김영선(Young Sun Kim); 이종현(Jong Hyeon Lee); 김형순(Hyung Sun Kim); 원창환(Chang Whan Won) |
| Abstract |
The ferrite powders having the composition of Mn Zn_0 Fe₂O₄ were synthesized by hydrothermal process. FeSO₄, MnSO₄and ZnSO₄ were used as divalent precusurs, and Fe₂(SO₄)₃, MnSO₄ and ZnSO₄were used as trivalent salt. MnZn-ferrite powders synthesized at 250℃, for 1hr and at pH=12 had the saturation magnetization of 92emu/g and 98emu/g and square shape and irregular shape for Fe^(2-) and Fe^(3-) respectively. The specific permeability(μ) of sintered toroidal pellets was about 30,000∼40,000 The sintered body which is sintered at 1350℃, for 3hr was nearly closed to theoretical density. |