Structural study of the apatite Nd8Sr2Si6O26 by laue neutron diffraction and single-crystal raman spectroscopy

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dc.contributor.authorAn, Ten_AU
dc.contributor.authorOrera, Aen_AU
dc.contributor.authorBaikie, Ten_AU
dc.contributor.authorHerrin, JSen_AU
dc.contributor.authorPiltz, ROen_AU
dc.contributor.authorSlater, PRen_AU
dc.contributor.authorSanjuán, MLen_AU
dc.date.accessioned2015-12-28T00:38:39Zen_AU
dc.date.available2015-12-28T00:38:39Zen_AU
dc.date.issued2014-08-20en_AU
dc.date.statistics2015-12-19en_AU
dc.description.abstractA single-crystal structure determination of Nd8Sr2Si6O26 apatite, a prototype intermediate-temperature electrolyte for solid oxide fuel cells grown by the floating-zone method, was completed using the combination of Laue neutron diffraction and Raman spectroscopy. While neutron diffraction was in good agreement with P6₃/m symmetry, the possibility of P6₃ could not be convincingly excluded. This ambiguity was removed by the collection of orientation-dependent Raman spectra that could only be consistent with P6₃/m. The composition of Nd8Sr2Si6O26 was independently verified by powder X-ray diffraction in combination with electron probe microanalysis, with the latter confirming a homogeneous distribution of Sr and the absence of chemical zonation commonly observed in apatites. This comprehensive crystallochemical description of Nd8Sr2Si6O26 provides a baseline to quantify the efficacy of cation vacancies, oxygen superstoichiometry, and symmetry modification for promoting oxygen-ion mobility. © 2014 American Chemical Societyen_AU
dc.identifier.citationAn, T., Orera, A., Baikie, T., Herrin, J. S., Piltz, R. O., Slater, P. R., & Sanjuán, M. L. (2014). Structural Study of the Apatite Nd8Sr2Si6O26 by Laue Neutron Diffraction and Single-Crystal Raman Spectroscopy. Inorganic Chemistry, 53(17), 9416-9423. doi: 10.1021/ic501558ren_AU
dc.identifier.govdoc6347en_AU
dc.identifier.issn0020-1669en_AU
dc.identifier.issue17en_AU
dc.identifier.journaltitleInorganic Chemistryen_AU
dc.identifier.pagination9416-9423en_AU
dc.identifier.urihttp://pubs.acs.org/doi/abs/10.1021/ic501558ren_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6480en_AU
dc.identifier.volume53en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectElectrolytesen_AU
dc.subjectMonocrystalsen_AU
dc.subjectFuel cellsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectRaman spectroscopyen_AU
dc.subjectOxygen ionsen_AU
dc.titleStructural study of the apatite Nd8Sr2Si6O26 by laue neutron diffraction and single-crystal raman spectroscopyen_AU
dc.typeJournal Articleen_AU
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