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Disordered materials

Structural disorder enables fast magnetization dynamics in nanoparticles

Nature Reviews Materials volume 11, page 9 (2026)Cite this article

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Magnetization dynamics in nanoparticles is difficult to control, as spin scattering lengths approach particle dimensions and conventional thin-film paradigms fail. Now, writing in Journal of the American Chemical Society, Xiuyu Wang and collaborators demonstrate that engineered disorder enables ultrafast magnetization control in structural high-entropy FePt nanoparticles.

The researchers synthesized 4-nm FePt nanoparticles with chemically disordered face-centred cubic crystal phases and quadruple grain boundaries, which achieve intrinsic high-entropy states through grain-boundary entropy and configurational entropy. This structural entropy engineering enables entropy-driven stabilization while avoiding elemental complexity.

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  1. Nature Reviews Materials http://www.nature.com/natrevmats/

    Giulia Pacchioni

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  1. Giulia Pacchioni
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Correspondence to Giulia Pacchioni.

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Pacchioni, G. Structural disorder enables fast magnetization dynamics in nanoparticles. Nat Rev Mater 11, 9 (2026). https://doi.org/10.1038/s41578-025-00884-1

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