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Synthesis of highly crystalline and monodisperse cobalt ferrite nanocrystals

Cited 255 time in Web of Science Cited 271 time in Scopus
Authors
Hyeon, Taeghwan; Chung, Yunhee; Park, Jongnam; Lee, Su Seong; Kim, Young-Woon; Park, Bae Ho
Issue Date
2002-07
Citation
Journal of Physical Chemistry B, Vol.106 No.27, pp.6831-6833
Abstract
Highly crystalline and monodisperse cobalt ferrite nanocrystals were fabricated by the high-temperature aging of a metal-surfactant complex followed by mild oxidation. Particle sizes were varied from 4 to 9 nm by changing the experimental conditions. Transmission electron microscopic (TEM) images of the particles showed two- and three-dimensional assembly of the particles, demonstrating the uniformity of the nanocrystals: Electron diffraction, X-ray diffraction, and high-resolution transmission electron microscopic images of the nanocrystals confirmed the highly crystalline nature of the cobalt ferrite structure. The elemental analysis confirmed the stoichiometry of cobalt ferrite, despite some variations in the relative atomic composition of nanocrystals. The nanocrystals were found to have typical behaviors of magnetic nanocrystals and the narrow energy barrier distributions of magnetic anisotropy, implying that the nanocrystals obtained are very uniform.
ISSN
1520-6106
URI
http://hdl.handle.net/10371/166078
DOI
https://doi.org/10.1021/jp026042m
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Chemical Convergence for Energy and Environment (에너지환경 화학융합기술전공)Journal Papers (저널논문_에너지환경 화학융합기술전공)
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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