Successful growth and room temperature ambient-pressure magnetic levitation of LK-99
https:// arxiv.org /abs/2308.01516 Successful growth and room temperature ambient-pressure magnetic levitation of LK-99
From the abstract
Here, for the first time, we successfully verify and synthesize the LK-99 crystals which can be magnetically levitated with larger levitated angle than Sukbae Lee's sample at room temperature. It is expected to realize the true potential of room temperature, non-contact superconducting magnetic levitation in near future.
10There is a summary of replication attempts on Wikipedia, half of them don't look good: https://en.wikipedia.org/wiki/LK-99#Replication_attempts
9A hundred non-replications can't overcome one good solid replication, though. If there's an ingot of the stuff sitting there levitating and conducting with zero resistance for all to see then all those other labs just screwed up in some way when they tried making or testing it.
17Or, more likely, LK-99 isn't actually a superconductor. Things like this should be able to be replicated by peers given the correct formulas. However, so far, even when other labs have correctly synthesized LK-99 (as confirmed by x-ray), no superconducting properties have been found. Further, the fact that the original authors aren't willing to provide their original samples to other universities is very suspect.
Trust, I want there to be a room temperature superconductor too, but after seeing the preliminary results from other labs I'm even more doubtful.
11
Supplementary video 1:Meissner effect for sample 2. [Video](https://www.bilibili.com/video/BV14p4y1V7kS/?spm_id_from=333.999.0.0&vd_source=510b6ea c8fec748481fb4b933932e80c)
Supplementary video 2:Exclude ferromagnetism of sample 2. [Video](https://www.bilibili.com/video/BV13k4y1G7i1/?buvid=XY81B1F843E91B69C1CC4563365B5FCE3 A291&is_story_h5=false&mid=jLEqsyica5eHkvtMXQ2K1A%3D%3D&plat_id=193&share_from=ug c&share_medium=android&share_plat=android&share_source=QQ&share_tag=s_i×tamp= 1690894807&unique_k=B6gawMH&up_id=7590247)
3