Synthesis, electrical properties and Na+ migration pathways of Na2CuP1.5As0.5O7

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dc.contributor.authorALQarni, OSAen_AU
dc.contributor.authorMarzouki, Ren_AU
dc.contributor.authorBen Smida, Yen_AU
dc.contributor.authorAlghamdi, MMen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorBelhadj Tahar, Ren_AU
dc.contributor.authorZid, MFen_AU
dc.date.accessioned2021-06-27T22:13:46Zen_AU
dc.date.available2021-06-27T22:13:46Zen_AU
dc.date.issued2020-03-06en_AU
dc.date.statistics2021-06-01en_AU
dc.description.abstractA new member of sodium metal diphosphate-diarsenate, Na2CuP1.5As0.5O7, was synthesized as polycrystalline powder by a solid-state route. X-ray diffraction followed by Rietveld refinement show that the studied material, isostructural with β-Na2CuP2O7, crystallizes in the monoclinic system of the C2/c space group with the unit cell parameters a = 14.798(2) Å; b = 5.729(3) Å; c = 8.075(2) Å; β = 115.00(3)°. The structure of the studied material is formed by Cu2P4O15 groups connected via oxygen atoms that results in infinite chains, wavy saw-toothed along the [001] direction, with Na+ ions located in the inter-chain space. Thermal study using DSC analysis shows that the studied material is stable up to the melting point at 688 °C. The electrical investigation, using impedance spectroscopy in the 260–380 °C temperature range, shows that the Na2CuP1.5As0.5O7 compound is a fast-ion conductor with σ350 °C = 2.28 10−5 Scm−1 and Ea = 0.6 eV. Na+ ions pathways simulation using bond-valence site energy (BVSE) supports the fast three-dimensional mobility of the sodium cations in the inter-chain space. © MDPIen_AU
dc.identifier.citationALQarni, O. S. A., Marzouki, R., Ben Smida, Y., Alghamdi, M. M., Avdeev, M., Belhadj Tahar, R., & Zid, M. F. (2020). Synthesis, electrical properties and Na+ migration pathways of Na2CuP1.5As0.5O7. Processes, 8(3), 305. doi:10.3390/pr8030305en_AU
dc.identifier.issn2227-9717en_AU
dc.identifier.issue3en_AU
dc.identifier.journaltitleProcessesen_AU
dc.identifier.pagination305en_AU
dc.identifier.urihttps://doi.org/10.3390/pr8030305en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10894en_AU
dc.identifier.volume8en_AU
dc.language.isoenen_AU
dc.publisherMDPIen_AU
dc.subjectCrystal structureen_AU
dc.subjectElectrical propertiesen_AU
dc.subjectPolycrystalsen_AU
dc.subjectSodiumen_AU
dc.subjectOxygenen_AU
dc.subjectImpedanceen_AU
dc.titleSynthesis, electrical properties and Na+ migration pathways of Na2CuP1.5As0.5O7en_AU
dc.typeJournal Articleen_AU
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