Abstract

hcp Co disk-shaped nanocrystals were obtained by rapid decomposition of cobalt carbonyl in the presence of linear amines. Other surfactants, in addition to the amines, like phosphine oxides and oleic acid were used to improve size dispersion, shape control, and nanocrystal stability. Co disks are ferromagnetic in character and they spontaneously self-assemble into long ribbons. X-ray and electron diffraction, electron microscopy, and SQUID magnetometry have been employed to characterize this material.

Keywords

ChemistryNanocrystalSquidFerromagnetismCobaltPhosphineDiffractionDispersion (optics)DecompositionSuperparamagnetismChemical engineeringCrystallographyNanotechnologyInorganic chemistryOrganic chemistryCondensed matter physicsCatalysisMagnetizationOptics

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Year
2002
Type
article
Volume
124
Issue
43
Pages
12874-12880
Citations
665
Access
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Víctor Puntes, Daniela Zanchet, Can K. Erdonmez et al. (2002). Synthesis of hcp-Co Nanodisks. Journal of the American Chemical Society , 124 (43) , 12874-12880. https://doi.org/10.1021/ja027262g

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DOI
10.1021/ja027262g