LK-99: Difference between revisions

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'''LK-99''' is a claimedproposed [[ambient pressure]] and [[room-temperature superconductor]] with a gray‒black appearance.{{r|sukbae-2023|p=8}}
LK-99 has a hexagonal structure slightly modified from [[lead]]‒[[apatite]] and is claimed to function as a superconductor below {{convert|400|K|C F|lk=in}}.{{r|sukbae-2023b}}{{r|sukbae-2023|p=1}}
The material was investigated by a team of Sukbae Lee, Ji-Hoon Kim, ''et al.'' from the [[Korea Institute of Science and Technology]] (KIST).{{r|sukbae-2023|p=1}} {{As of|2023|7|26}} the discovery of LK-99 superconductivity has not been [[peer review]]ed or independently [[Reproducibility|replicated]].{{r|flaherty-20230626}}
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== Response ==
{{As of|2023|07|26}}, the measured properties do not prove that LK-99 is a superconductor as they do not fully explain how the LK-99's magnetisation can change, nor its specific heat capacity.{{r|padavic-c-20230726}}
Media reports on the reported discovery mentioned the concurrent retractions of fraudulent research on high temperature superconductors by [[Ranga P. Dias]]. Scientists speculated that the material could be strongly [[Diamagnetism|diamagnetic]], but perhaps not [[Superdiamagnetism|diamagnetic enough]] to become a superconductor.{{r|ritchie-20230726}}
 
An alternative explanation for LK-99's stated reaction to magnets could be [[diamagnetism]].{{r|ritchie-20230726}}
 
==References==