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One of the papers that argued that LK-99's levitation was due to mixed diamagnetism and weak ferromagnetism also assigned it a very strong diamagnetism: -2•10^-
by scythe 3y ago
One of the papers that argued that LK-99's levitation was due to mixed diamagnetism and weak ferromagnetism also assigned it a very strong diamagnetism: -2•10^-4, which would make it the second-strongest such material known, beating out bismuth. Probably not that useful, but interesting if confirmed.
I read some of the papers linked in this article, but they use different units and don't identify a diamagnetic susceptibility in the way that I'm used to, so I'm not sure if that was confirmed (and I have stuff to do).
- platz 3y agoBut, a lot of those studies weren't using pure LK-99 but samples with lots of copper sulfide mixed in.
- scythe 3y agoCopper sulfide's diamagnetism is not that high. It would be notable if it were. So that isn't a possible explanation. Cu2S was suggested as a culprit for the observed conductivity changes. The preprint reporting the high value of diamagnetism is here: https://arxiv.org/pdf/2308.03110.pdf https://arxiv.org/pdf/2308.03110.pdf >The subtracted diamagnetic susceptibility is larger than that of Bismuth and water but smaller than that of Pyrolytic carbon (page 3, bottom left)