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The oxidation behavior and magnetic properties of iron carbonitride ultrafine particles

Published online by Cambridge University Press:  31 January 2011

X. Q. Zhao ,
Y. Liang ,
Z. Q. Hu  and
B. X. Liu
X. Q. Zhao
Affiliation:
Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China and National Laboratory for RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China
Y. Liang
Affiliation:
National Laboratory for RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China
Z. Q. Hu
Affiliation:
National Laboratory for RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China
B. X. Liu
Affiliation:
Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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Abstract

Iron nitride and iron carbonitride (ICN) ultrafine particles (20–80 nm in size) have been synthesized by laser-induced pyrolysis of the Fe(CO)5–NH3–C2H4 system. The oxidation behavior, surface morphologies, and structural characteristics as well as magnetic properties of these particles are reported and discussed. It is found that the presence of very thin carbon coating (1–2 nm) on the ICN particles plays an important role in preventing the oxidation of the particles. Accordingly, the ICN ultrafine particles exhibit higher saturation magnetization (142 emu/g) than the iron nitride ones (124 emu/g).

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 11 , November 1996 , pp. 2689 - 2692
Copyright
Copyright © Materials Research Society 1996

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References

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