Synthesis and magnetic behavior of self-assembled Co nanorods and nanoballs

Wei Wen Ma, Yan Yang, Chong Tow Chong, Alexander Eggeman, S. N. Piramanayagam, Tie Jun Zhou, Tao Song, Jian Ping Wang

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The magnetic properties and the synthesis behavior of self-assembled Co nanorods and nanoballs were analyzed. The Co nanoparticles were synthesized from octacarbonyldicobalt in o-dichlorobenzene solution in oleic acid, using rapid pyrolysis. It was observed that the shape, the size and the size distribution of the nanoparticles were influenced by the preparation conditions. The size, structure, and morphology of the Co nanoparticles were investigated using transmission electron microscopy images, selected area electron diffraction patterns, and energy-dispersive x-ray spectra. The as-synthesized rod-shaped Co nanoparticles were found to exhibit paramagnetic behavior at 293 K, and feromagnetic behavior at 100 K, under 20000 Oe.

Original languageEnglish (US)
Pages (from-to)6801-6803
Number of pages3
JournalJournal of Applied Physics
Volume95
Issue number11 II
DOIs
StatePublished - Jun 1 2004

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