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Preparation and Magnetic Properties of Fe Nanoparticles by Chemical Vapor Condensation Process

Published online by Cambridge University Press:  17 March 2011

C. J. Choi ,
B. K. Kim  and
X. L. Dong
C. J. Choi
Affiliation:
Korea Institute of Machinery and Materials, 66 Sangnam-Dong, Changwon, Kyungnam 641-010, Korea
B. K. Kim
Affiliation:
Korea Institute of Machinery and Materials, 66 Sangnam-Dong, Changwon, Kyungnam 641-010, Korea
X. L. Dong
Affiliation:
Laboratory of Ultrafine Particles, Shenyang Polytechnic University, 110023, Shenyang, Peoples' Republic of China
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Abstract

Nano-sized Fe particles were synthesized by Chemical Vapor Condensation (CVC) Process using the precursor of iron carbonyl (Fe(CO)5) as the source. We investigated the microstructures, magnetic properties of the Fe nanoparticles and their oxidation behavior during annealing systematically by means of HRTEM, DTA-TG, Mössbauer spectroscopy. The prepared particle was nearly spherical shape and core-shell type structure. The magnetic states of Fe nanoparticles changed from superparamagnetism to ferromagnetism with the particle size and microstructure. Oxidation heat treatment leads to the successive appearance of oxide phases.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 704: Symposium W – Nanoparticulate Materials , 2001 , W9.37.1
Copyright
Copyright © Materials Research Society 2002

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