Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis of $Fe_4N$ Powder and Its Magnetic Properties for Magnetic Recording

자기기록용 $Fe_4N$ 분말의 합성 및 자기특성

  • Published : 1991.02.01
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Abstract

For determination the optimum manufacturing condition Fe4N powder for magnetic recording media, we have studied the following important conditions : the effect of particle size of metal powder on the nitridation, the condition of nitridation on the formation and magnetic properties of Fe4N, and stability of Fe4N powder against temperature and change on standing. The results can be summarized as : 1) Single phase Fe4N is formed at 50v/o of ammonia concentration during the nitridation reaction, 2) Single phase Fe4N is formed above 40$0^{\circ}C$, 15min regardless of the metal powder sizes, 3) Coercivity and saturation magnetization of Fe4N powder almost constant value until 20 day-passing from preparation date.

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