발간논문

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Vol.34, No.8, 1067 ~ 1074, 1996
Title
Research Paper - Electronic , Magnetic and Optical Materials - : Magnetic properties of MnZn - ferrite prepared by Hydrothermal process
김영선Young Sun Kim, 이종현Jong Hyeon Lee, 김형순Hyung Sun Kim, 원창환Chang 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.
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