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https://twitter.com/calebwatney/status/1855016577646666123The paper can be found here
https://twitter.com/Robert_Palgrave/status/1742700004274512356First the posts on Zhihu:
https://twitter.com/mattparlmer/status/1742566608554627227Let's quickly recap the Summer '23 LK99 phenomenon. The compound was claimed to be copper doped lead apatite, or more specifically, Pb₉Cu(PO₄)₆O.
https://x.com/Robert_Palgrave/status/1685450153677979648?s=20
https://twitter.com/cedergroup/status/1730780112826855906You initially published the M= In and Fe compounds as hexagonal crystal system, and the M= Zr, Hf and Sn as tetragonal.
https://twitter.com/cedergroup/status/1729893229125132680The paper reports many 'new' compounds. The only characterisation they show is powder XRD. What no compositional analysis? Nope.
https://twitter.com/alexkaplan0/status/1686876306871394304The authors use 4 different compositions. They replicate the reaction of the original Korean paper, with lanarkite + Cu3P, but also use a different lead precursor Pb3O2(SO4).
https://twitter.com/alexkaplan0/status/1684044629191151616?s=20I don’t know enough about the superconductivity. But I can talk about the chemistry and characterisation.