10.1021/ja027262g.s001 Victor F. Puntes Victor F. Puntes Daniela Zanchet Daniela Zanchet Can K. Erdonmez Can K. Erdonmez A. Paul Alivisatos A. Paul Alivisatos Synthesis of hcp-Co Nanodisks American Chemical Society 2002 Other surfactants presence size dispersion phosphine oxides electron diffraction ribbon electron microscopy hcp shape control decomposition Synthesi material nanocrystal stability amines cobalt carbonyl oleic acid SQUID magnetometry Co disks Nanodisk 2002-10-05 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Synthesis_of_hcp-Co_Nanodisks/3644775 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.