FMR characterization of hexagonal arrays of Ni nanowires

We report FMR experiments in hexagonal arrays of Ni nanowires (similar to35 nm diameter separated similar to105 nm) performed at 9.4 GHz. The spectra show a main line associated with a uniform mode. The angular variation of this line is characteristic of an easy axis along the wire length. The magnitude of the effective anisotropy field of 1.9-2.3 kOe is consistent with the structural data. (C) 2003 Elsevier B.V. All rights reserved.