Visualizing Magnetic Order in Self-Assembly of Superparamagnetic Nanoparticles

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Abstract

We use soft x-ray vector-ptychographic tomography to determine the three-dimensional magnetization field in superparamagnetic nanoparticles self-assembled at the liquid-liquid interface and reveal the magnetic order induced by layered structure. The spins in individual nanoparticles become more aligned with increasing number of layers, resulting in a larger net magnetization.

Year of Publication
2024
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