We report on results of computer micromodelling of anti-vortex states in asymmetrical cross-like ferromagnetic nanostructures and their practical realization. The arrays of cobalt crosses with 1 mkm branches, 100 nm widths of the branches and 40 nm thicknesses were fabricated using e-beam lithography and ion etching. Each branch of the cross was tapered at one end and bulbous at the other. The stable formation of anti-vortex magnetic states in these nanostructures during magnetization reversal was demonstrated experimentally using magnetic force microscopy.
Cite
@article{arxiv.0909.5134,
title = {Anti-vortex state in cross-like nanomagnets},
author = {V. L. Mironov and O. L. Ermolaeva and S. A. Gusev and A. Yu. Klimov and V. V. Rogov and B. A. Gribkov and A. A. Fraerman and O. G. Udalov and R. Marsh and C. Checkley and R. Shaikhaidarov V. T. Petrashov},
journal= {arXiv preprint arXiv:0909.5134},
year = {2013}
}