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Structural and magnetic characterization of barbosalite Fe3(PO4)2(OH)2

Abstract : Single crystals and polycrystalline samples of barbosalite Fe3(PO4)2(OH)2 iron phosphate were successfully synthesized by hydrothermal method at low pressure and temperature. Careful investigations of the crystal structure by high resolution X-ray diffraction and transmission electron microscopy evidence a complex barbosalite framework where trimers of face sharing FeO6 octahedra along the <110> direction are connected by an additional Fe site, partly occupied. Despite this structural disorder, the spins order in a rather simple magnetic structure below 160 ​K. The corresponding magnetic point group of P21 makes the barbosalite a promising candidate for the design of new multiferroics.
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Submitted on : Friday, May 20, 2022 - 10:11:33 AM
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M. Poienar, F. Damay, J. Rouquette, S. Malo, A. Maignan, et al.. Structural and magnetic characterization of barbosalite Fe3(PO4)2(OH)2. Journal of Solid State Chemistry, Elsevier, 2020, 287, pp.121357. ⟨10.1016/j.jssc.2020.121357⟩. ⟨hal-02773988⟩

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