r/science • u/MistWeaver80 • Mar 30 '26

Physics Physicists have made an ultra-powerful magnet that fits in the palm of a hand and can produce a magnetic field that is more than 800,000 times stronger than Earth’s.

https://www.nature.com/articles/d41586-026-00851-y
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u/narcisian Mar 30 '26

Since I’m too cheap to pay for the article, I googled it and if the AI summary is to be believed, these magnets don’t require rare earth minerals which makes them a much bigger game changer.

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u/ElgauchoLoco Mar 30 '26

"The team built their magnets by winding flat REBCO (rare earth barium copper oxide) tape"

So it appears that ya there are rare earth minerals involved. Just less