Polymorphism of Pb₅(PO₄)₃OH_δ within the LK-99 mixture.

ABSTRACT: During the synthetic exploration targeting the polycrystalline compound LK-99, an unexpected phase, Pb₅(PO₄)₃OH_δ, was identified as a byproduct. We elucidated the composition of this compound through single-crystal X-ray diffraction analysis. Subsequent synthesis of the target compounds was achieved via high-temperature solid-state pellet reactions. The newly identified Pb₅(PO₄)₃OH_δ has an orthorhombic crystal structure with space group Pnma, representing a unique structure differing from the hexagonal apatite phases of Pb₁₀(PO₄)₆O and Pb₅(PO₄)₃OH. Comprehensive temperature- and magnetic-field-dependent magnetization studies unveiled a te

SUBMITTER: Xu M 

PROVIDER: S-EPMC11789162 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature