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기록매체용 Iron - nitride의 합성 및 자기특성
오영우(Y. W. Oh),김문섭(M. S. Kim) 한국자기학회 1992 韓國磁氣學會誌 Vol.2 No.3
Iron nitride Fe₄N by partial substitution of nitrogen by carbon was prepared by nitriding the iron oxalate whose thermal decomposition gives a carburating atmosphere. Iron oxalates, the precursors, were prepared by precipitation and co-precipitation. The size and shape of the carbonitride particles could be controlled by modifying the conditions of preparation of the oxalate precursor. From the results of electron micrographs, it is clear that the Fe₄N pigment particle maintains the original shape(needle shape) of the starting materials and that it consists of fine unit particles which link together to form a stereo-network structure.<br/> An investigation of the Fe^Ⅱ₃ Fe^Ⅰ_(1-x) Sn_xN_(1-y)Cy. solid solution has shown that Sn plays the role of a growth inhibitor of the elementary microcrystallites of the iron carbonitride.<br/> The coercive force and saturation magnetization of iron carbonitride obtained from co-precipitated iron oxalate were 500 Oe and 120 emu/g, respectively.