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Magnetic Property of á-Fe Nanoparticles Prepared by Solventless Thermal Decomposition Method

Published online by Cambridge University Press:  01 February 2011

Young Chul Han
Young Chul Han*
Affiliation:
yskang@pknu.ac.kr, Pukyong National University, Busan, 608-737, Korea, Republic of
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Abstract

Nano sized α-Fe particle was synthesized by modified thermal decomposition method. It resulted in the higher saturation magnetization (Ms) almost equivalent to the value of bulk Fe power (Mbulk = 210 emu/g). To prepare Fe nanoparticles, the Fe2+-(oleate)2 complex was annealed at 400 J in pyrex tube and the prepared Fe3O4 nanoparticle was reduced to Fe crystal structure at 700 J with NaCl under Ar+H2 gas atmosphere and annealed again under high vacuum system of 10−5 torr. The crystallinity and structure of the Fe nanoparticle was investigated by powder X-ray diffraction (XRD). The shape and size was confirmed by transmission electron microscope (TEM) images. The magnetic properties were characterized with coercivity and remanence from hysteresis loop by vibrating sample magnetometer (VSM)

Keywords

nanoscalemagnetic propertiesFe
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 962: Symposium P – Nanoscale Magnets – Synthesis, Self-Assembly, Properties and Applications , 2006 , 0962-P10-22
Copyright
Copyright © Materials Research Society 2007

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