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Updated: Jun 18, 2026

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
Published on: July 20, 2022
Co dimers on hexagonal carbon rings proposed as subnanometer magnetic storage bits
Ruijuan Xiao1, Daniel Fritsch, Michael D Kuz'min
1IFW Dresden e.V., Post Office Box 270116, D-01171 Dresden, Germany.
Abstract:
It is demonstrated by means of density functional and ab initio quantum chemical calculations, that transition-metal-carbon systems have the potential to enhance the presently available area density of magnetic recording by 3 orders of magnitude. As a model system, Co2 benzene with a diameter of 0.5 nm is investigated. It shows a magnetic anisotropy of the order of 0.1 eV per molecule, large enough to store permanently 1 bit of information at temperatures considerably larger than 4 K. A similar performance can be expected, if cobalt dimers are deposited on graphene or on graphite.
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