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Fabrication of Iron Oxide Nanoparticles by Pulsed-Laser Ablation

Published online by Cambridge University Press:  15 February 2011

Takeshi Sasaki ,
Xiaoyan Zeng  and
Naoto Koshizaki
Takeshi Sasaki
Affiliation:
National Institute of Materials and Chemical Research (NIMC), Agency of Industrial Science and Technology, MITI, 1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
Xiaoyan Zeng
Affiliation:
National Institute of Materials and Chemical Research (NIMC), Agency of Industrial Science and Technology, MITI, 1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
Naoto Koshizaki
Affiliation:
National Institute of Materials and Chemical Research (NIMC), Agency of Industrial Science and Technology, MITI, 1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Abstract

Nanoparticles of iron oxide were prepared by pulsed laser ablation on carbon coated mica substrates. An ArF excimer laser was used to irradiate a Fe2O3 target in atmospheres of Ar at room temperature. The effects of ambient pressure on size and morphology of nanoparticles were investigated using transmission electron microscopy. The morphology of the deposited nanoparticles was strongly dependent on the ablation pressure. The formations of nanoparticles and their aggregates were observed at pressures higher than 46.7 Pa and 267 Pa of Ar, respectively. The size of the primary nanoparticles ranged from 2 – 9 nm and their size distribution agreed with a log-normal distribution function. The aggregate size increased with ambient pressure and the primary particle size was independent of ambient pressure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 526: Symposium Y – Advances in Laser Ablation of Materials , 1998 , 67
Copyright
Copyright © Materials Research Society 1998

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