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Laser Synthesis of Iron Nitride Nanoparticles from Pyrolysis of Fe(CO)5-NH3 System

Published online by Cambridge University Press:  15 February 2011

X. Q. Zhao ,
Y. Liang ,
F. Zheng ,
Z. Q. Hu ,
G. B. Zhang  and
K. C. Bai
X. Q. Zhao
Affiliation:
Dept. of RS Crystallite and Laser Processing, Inst. of Metal Research, Academia Sinica, Shenyang 110015, PR.China.
Y. Liang
Affiliation:
Dept. of RS Crystallite and Laser Processing, Inst. of Metal Research, Academia Sinica, Shenyang 110015, PR.China.
F. Zheng
Affiliation:
Dept. of RS Crystallite and Laser Processing, Inst. of Metal Research, Academia Sinica, Shenyang 110015, PR.China.
Z. Q. Hu
Affiliation:
Dept. of RS Crystallite and Laser Processing, Inst. of Metal Research, Academia Sinica, Shenyang 110015, PR.China.
G. B. Zhang
Affiliation:
The Northeastern University, Shenyang 110015, PR.China.
K. C. Bai
Affiliation:
The Northeastern University, Shenyang 110015, PR.China.
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Abstract

By vapor-phase pyrolysis of Fe(CO) 5 and NH3 induced by CW CO2 laser, γ'-Fe4N and ε- Fe3N nanoparticles(≤35nm) were prepared in Ar and N2 atmospheres. In Ar, γ'-Fe4N accompanied by a little α-Fe was formed at low temperatures below 650°C, while higher temperatures favored the formation of γ-Fe. In N2 atmospheres, a mixture of Fe4N and Fe3N nanoparticles were obtained at high temperatures. In addition, the influences of synthesis parameters on the structure, morphology and magnetic properties of the nanoparticles were discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 368: Symposium T – Synthesis and Properties of Advanced Catalytic Materials , 1994 , 39
Copyright
Copyright © Materials Research Society 1995

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References

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