1 Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, The People's Republic of China.
A simple solvothermal method has been discovered to synthesize single-walled flux-closure Ni-Co magnetic alloy nanorings in high yield, which are directly fabricated in a reaction solution and able to chronically exist in solution.