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  Scopus ID: 21100926589

Pb0.93Co1.86Cr1.14(PO4)3: A Novel Non-stochiometric Phosphate with α-CrPO4-type Structure

Fouad Alloun, Siham El Maataoui, Mohammed Hadouchi, Jamal Khmiyas, Abderrazzak Assani, Mohamed Saadi and Lahcen El Ammari


Transition metal-based phosphates have attracted considerable attention since the study of the electrochemical activity of lithium iron phosphate in batteries by Goodenough’s group in 1997. The development of new phosphates with novel structures and the study of their structure-property relationship has been the main subject of several research groups. In this spirit, a novel non-stochiometric phosphate Pb0.93Co1.86Cr(PO4)3 is synthesized as a single crystal from a melted mixture and its structure is determined by X-ray diffraction technique. The structural determination has shown that it crystallizes in the orthorhombic system with the Imma (No. 74) space group. The crystal structure of this phosphate belongs to the α-CrPO4 family which consists of (Co/Cr)O6 octahedra and PO4 tetrahedra sharing edges and/or vertices to build a 3D (Three-dimensional) framework that contains two distinct tunnels parallel to [100] and [010] where the Pb2+ cations are located.

Published on: September 29, 2023
doi: 10.17756/nwj.2023-s2-077
Citation: Alloun F, El Maataoui S, Hadouchi M, Khmiyas J, Assani A, et al. 2023. Pb0.93Co1.86Cr1.14(PO4)3: A Novel Non-stochiometric Phosphate with α-CrPO4-type Structure. NanoWorld J 9(S2): S455-S459.

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