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The research aims to create a method for fabricating and testing individual magnetic bits at nanoscale precision.

July 26, 2026Nature CommunicationsOpen Access

Controllable patterning of magnetic bits with atomically sharp boundaries

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Proof-of-concept demonstration fabricates and controls magnetic bits in nanometre scale, promising better data storage.

The research aims to create a method for fabricating and testing individual magnetic bits at nanoscale precision.
Utilized an aberration-corrected atomic-sized electron probe for direct fabrication of magnetic bits.
Employed in situ nanobeam electron magnetic circular dichroism (EMCD) for magnetometry of individual bits.
Achieved deterministic writing of binary information in individual bits using an applied magnetic field.
Demonstrated detectable magnetic signals from a domain with a width of ~4 nm.
Successfully reversed localized magnetization to encode binary information ('1' and '0').
Established a complete workflow from atomic-scale fabrication to magnetic readout for individual bits.

Wang et al. (2026) studied this question.

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