RESEARCH HIGHLIGHT 20 March 2026 A compact device can produce a magnetic field that is more than 800,000 times stronger than Earth’s. Techniques such as nuclear magnetic resonance require strong magnetic fields. Credit: Sakkmesterke/SPL Physicists have made an ultra-powerful magnet that fits in the palm of a hand 1 . Access options Access through your institution Access Nature and 54 other Nature Portfolio journals Get Nature+, our best-value online-access subscription $32.99 / 30 days cancel any time Subscribe to this journal Receive 52 print issues and online access $199.00 per year only $3.83 per issue Rent or buy this article Prices vary by article type from $1.95 to $39.95 Prices may be subject to local taxes which are calculated during checkout Nature 651 , 857 (2026) doi: https://doi.org/10.1038/d41586-026-00851-y References Subjects Latest on: Materials science Electroluminescent photoresists extending lithographic scaling to OLEDs Article 16 SEP 26 Heterogeneous photonic integration of…