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|Author(s):||Guangjun Cheng; Robert D. Shull; Angela R. Hight Walker;|
|Title:||Dipolar Chains formed by synthesized cobalt nanocubes|
|Published:||May 11, 2009|
|Abstract:||Cobalt nanocubes with an average edge length of 50 nm and the epsilon crystalline structure were synthesized via thermo-decomposition in 1,2-dichlorobenzene at 120 oC in the presence of the surfactants. These nanocubes form dipolar chains upon drying in zero applied field and three-dimensional chains along the applied magnetic field direction. The magnetic measurements reveal strong inter-particle couplings among the nanocubes in their dried magnetic-field induced assemblies. The constricted hysteresis loops and near-zero coercivity indicate the existence of vortex states in the assemblies. Exposure to electron beam heats up the nanocubes and turns the dipolar chains into nanowires.|
|Citation:||Journal of Magnetism and Magnetic Materials|
|Pages:||pp. 1351 - 1355|
|Keywords:||cobalt, dipolar chains, magnetic nanoparticles, magnetic property, nanocubes|
|Research Areas:||Biological Physics|
|PDF version:||Click here to retrieve PDF version of paper (411KB)|