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What Is Tesla's Mystery Magnet?

18 Mar 2023 | Abstracted from IEEE Spectrum

"...an absolute bombshell: 'We have designed our next drive unit, which uses a permanent-magnet motor, to not use any rare-earth elements at all...It was a stunning disclosure that left most experts in permanent magnetism wary and perplexed...The problem here is physics, which not even Tesla can alter.

"So if not rare-earth permanent magnets for Tesla's next motor, then what kind? Among experts willing to speculate, the choice was unanimous: : ferrite magnets."

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