# The Crystal Structure of Apatite and Copper-Doped Apatite

Article · Yibo Liu, Changzeng Fan, Bing Zhang, Bin Wen, Lifeng Zhang

- Archive id: doi:10.70322/gct.2025.10005
- Published: 2025-01-01
- Venue: Green Chemical Technology
- DOI: https://doi.org/10.70322/gct.2025.10005
- Citations: 2
- Source URL: https://doi.org/10.70322/gct.2025.10005
- PDF: https://www.sciepublish.com/index/article/view_full_text/id/510
- Provenance: openalex

## Abstract

The recent claim of superconductivity above room temperature in Pb10−xCux(PO4)6O, where 0.9 \< x \< 1 (referred to as LK-99), has generated significant interest. In this study, we first investigated the detailed crystal structures of four natural apatite by single crystal X-ray diffraction (SXRD) combined with a scanning electron microscope (SEM) equipped with energy dispersive X-ray spectroscopy (EDX) measurement. Secondly, pilot experiments of doping copper (Cu) atoms into the apatite lattice were carried out by high-temperature mixed pure copper and natural apatite powders. Finally, copper-doped lead apatite has been synthesized via a three-step solid-state reaction method, and its crystal structure has been determined using SXRD, SEM/EDX, and transmission electron microscopy (TEM).

_Abstract reproduced under CC-BY (publisher license, via OpenAlex)._

Topics: [Room-Temperature Superconductivity Claims & Replication](https://space-kitty.com/topics/room-temperature-claims)

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