Effect of carbon content on structure and magnetic properties for (Fe,Ni)1−xCx by mechanical alloying |
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Authors: | Shiyue Xu Minjian Zhong Liming YuHangde Chen Zhengming HeJincang Zhang |
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Institution: | Department of Physics, Shanghai University, Shanghai 200444, China |
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Abstract: | FCC (Fe55Ni45)1−xCx supersaturated solid solution was prepared in a wide concentration range (0?x?0.9) by mechanical alloying of nanocrystalline Fe55Ni45 with graphite. The lattice constant of Fe55Ni45 increases linearly with increasing carbon content up to x=0.25. At the same time, it is found that the magnetic moment per metal atom (Fe, Ni) decreases linearly with increasing carbon content for 0?x?0.25 with a slope of 1.2 μB/at. For high carbon content, x?0.5, it is observed that the decrease of lattice constant and increase of moment per metal atom (Fe, Ni) with increasing C content, indicates that the dissolution of carbon is hindered by the high-volume fraction of graphite in the initial powder mixture. The complete amorphization of x=0.5 does not occur after the extended ball milling. The alloying effect of carbon on the magnetization is compared with other metalloid B, P, and Si in Fe- and Ni-based binary system. |
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Keywords: | 75 50 Cc 75 75 +a 81 07 Bc 81 20 Ev |
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