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Rzah t1_iuautfk wrote

Reply to comment by spectacular_coitus in New approach to ‘cosmic magnet’ manufacturing could reduce reliance on rare earths in low-carbon technologies by FUZxxl

The material is roughly 65%* magnetic strength of Neodymium, it is found in meteorites that had just the right composition and spent millions of years cooling down, now we can simply cast it. It will likely replace rare earths for a lot of applications.

* article says theoretical max of 335 kJ/m^3 for Tetrataenite vs 512 kJ/m^3 for Neodymium

/edit, not an expert, just was curious how it compared and went looking, your comment seemed best place to dump what I found.

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SemanticTriangle t1_iucdtpa wrote

We generally use NdFeB magnets or similar alloys, which have magnetic energy products comparable to this specific NiFe based mineral.

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