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Updated: Apr 3, 2026

Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques
Published on: July 2, 2018
Size-Specific Spin Configurations in Single Iron Nanomagnet: From Flower to Exotic Vortices
Christophe Gatel1, Francisco Javier Bonilla2, Anca Meffre2
1Centre d'Elaboration de Matériaux et d'Etudes Structurales, CEMES-CNRS , 29 rue Jeanne Marvig, B.P. 94347, 31055 Toulouse, France.
Abstract:
The different spin configurations in the vicinity of the single-domain/vortex transition are reported in isolated magnetic nanoparticles. By combining chemical synthesis, electron holography in a dedicated transmission electron microscope and micromagnetic simulations, we establish the "magnetic configurations vs size" phase diagram of Fe single-crystalline nanocubes. Room temperature high resolution magnetic maps reveal the transition between single-domain and vortex states for Fe nanocubes from 25 to 27 nm, respectively. An intermediate spin configuration consisting of an ⟨111⟩ vortex is for the first time evidenced.
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