Magnetic Nanostructures and Dynamics

Magnetic nanostructures encompass engineered materials with dimensions at the nanometre scale in which tailored geometries and reduced dimensionality give rise to novel spin configurations and dynamic phenomena. At this scale, interactions such as exchange coupling, anisotropy and dipolar fields can be harnessed to stabilise topological textures—including skyrmions, vortices and domain walls—and to support quantised spin waves known as magnons. Advances in fabrication methods, from two-photon lithography to additive manufacturing, have enabled the creation of two- and three-dimensional architectures with controlled curvature, topology and flexibility. These developments underpin emerging technologies in high-density data storage, ultrafast spintronics, neuromorphic computing and biomedical sensing. The dynamic response of such structures to electric currents, microwave fields or mechanical strain permits the manipulation of spin textures at gigahertz to terahertz frequencies, offering pathways to energy-efficient devices. Integration of freestanding antiferromagnetic membranes or three-dimensional ferromagnetic wireframes with conventional electronics represents a convergence of spin-based information processing and curvilinear magnetism, promising new functionalities through the interplay of geometry and magnetism.

Research from Nature Portfolio

Recent studies have demonstrated the fabrication of freestanding crystalline antiferromagnetic nanomembranes that can be detached from lattice-matched substrates and flexibly interfaced with curved supports. These α-Fe₂O₃ layers exhibit a spin-reorientation transition and host a rich variety of topological textures, which can be reconfigured across three-dimensional folds via strain. Controlled mechanical manipulation permits non-thermal generation of antiferromagnetic vortices at room temperature, opening avenues for magnetoelastic design of spin textures in both static and dynamic regimes.

In parallel, three-dimensional soft magnetic wireframe structures have been realised that accommodate high-order vorticity dictated by their Euler characteristic. Wireframes homeomorphic to a sphere support a discrete number of vortices and antivortices whose total vorticity matches the topology, while toroidal geometries balance these entities. Introducing additional loops or holes expands the network of antivortices, suggesting potential applications in reservoir computing and superconducting electronics. These findings elucidate how geometry and topology govern spin dynamics and stray-field distributions in three-dimensional nanomagnets.

Magnetic Nanostructures and Dynamics publication trend

The graph below shows the total number of articles in magnetic nanostructures and dynamics across all publications each year (not limited to Nature Index journals).

Technical terms

Antiferromagnet: magnetic material in which adjacent spins align in opposite directions, resulting in no net magnetisation.

Topological soliton: stable, particle-like spin configuration protected by topological invariants, such as skyrmions and vortices.

Magnon: quantum of a spin wave, representing collective oscillations of the magnetic spin lattice.

Domain wall: boundary region separating magnetic domains with different magnetisation orientations.

Dzyaloshinskii–Moriya interaction: antisymmetric exchange interaction arising from broken inversion symmetry, which stabilises chiral spin textures.

References

1. Spatially reconfigurable antiferromagnetic states in topologically rich free-standing nanomembranes. Nature Materials (2024).
2. Three-dimensional magnetic nanotextures with high-order vorticity in soft magnetic wireframes. Nature Communications (2024).
3. Realization and Control of Bulk and Surface Modes in 3D Nanomagnonic Networks by Additive Manufacturing of Ferromagnets. Advanced Materials (2023).
4. Magnetism in curved geometries. Journal of Physics D (2016).
5. Two-photon lithography for 3D magnetic nanostructure fabrication. Nano Research (2017).
6. Retrieving spin textures on curved magnetic thin films with full-field soft X-ray microscopies. Nature Communications (2015).