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Researchers Discover New Third Class of Magnetism that Could Transform Digital Devices (www.nottingham.ac.uk)

submitted 1 week ago by shreddy_scientist@lemmy.ml to c/science@lemmy.ml

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A new class of magnetism called altermagnetism has been imaged for the first time in a new study. The findings could lead to the development of new magnetic memory devices with the potential to increase operation speeds of up to a thousand times.

Altermagnetism is a distinct form of magnetic order where the tiny constituent magnetic building blocks align antiparallel to their neighbours but the structure hosting each one is rotated compared to its neighbours.

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[–] adespoton@lemmy.ca 4 points 1 week ago* (last edited 1 week ago) (1 children)

Why is there no structural diagram?

I still haven’t figured out what they’re talking about, with the relationships of the polar charges wrt the crystal lattice. Kind of sounds like they’re creating a 3D structure with the poles flipped across all vertices?

[–] shreddy_scientist@lemmy.ml 6 points 1 week ago* (last edited 1 week ago) (1 children)

The image at the top of the page is from one of the figures provided in the research paper this article discusses. But the reason it's difficult to imagine is because the concept isn't as straightforward as it sounds. Here's one of the helpful figures:

This does a great job showing how they're both antiparallel and rotating in different directions, as well as how it looks when scaled up.

[–] adespoton@lemmy.ca 2 points 1 week ago

Thanks! That’s exactly what I was looking for.

[–] Suki@c.im 2 points 1 week ago

@shreddy_scientist thank you for sharing!