| 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 |
| Volume: |
321 |
| Issue: |
10 |
| 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 (401KB) |
