Structural and magnetic properties of the osmium double perovskites Ba2–xSrxYOsO6

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dc.contributor.authorKayser, Pen_AU
dc.contributor.authorInjac, Sen_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorVogt, Ten_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorMaynard-Casely, HEen_AU
dc.contributor.authorZhang, Zen_AU
dc.date.accessioned2021-02-04T01:11:34Zen_AU
dc.date.available2021-02-04T01:11:34Zen_AU
dc.date.issued2017-05-17en_AU
dc.date.statistics2021-01-23en_AU
dc.description.abstractThe crystal and magnetic structures of double perovskites of the type Ba2–xSrxYOsO6 were studied by synchrotron X-ray and neutron powder diffraction methods, bulk magnetic susceptibility measurements, and X-ray absorption spectroscopy. The structures were refined using combined neutron and synchrotron data sets based on an ordered array of corner-sharing YO6 and OsO6 octahedra, with the Ba/Sr cations being completely disordered. The structure evolves from cubic to monoclinic Fm3̅m (x ≈ 0.6) → I4/m (x ≈ 1.0) → I2/m (x ≈ 1.6) → P21/n as the Sr content is increased, due to the introduction of cooperative tilting of the octahedra. Bulk magnetic susceptibility measurements demonstrate the oxides are all anti-ferromagnets. The decrease in symmetry results in a nonlinear increase in the Neel temperature. Low-temperature neutron diffraction measurements of selected examples show these to be type-I anti-ferromagnets. X-ray absorption spectra collected at the Os L3- and L2-edges confirm the Os is pentavalent in all cases, and there is no detectable change in the covalency of the Os cation as the A-cation changes. Analysis of the L3/L2 branching ratio shows that the spin–orbit coupling is constant and insignificant across the series. © 2017 American Chemical Societyen_AU
dc.identifier.citationKayser, P., Injac, S., Kennedy, B. J., Vogt, T., Avdeev, M., Maynard-Casely, H E., & Zhang, Z. (2017). Structural and magnetic properties of the osmium double perovskites Ba2–xSrxYOsO6. Inorganic Chemistry, 56(11), 6565–6575. doi:10.1021/acs.inorgchem.7b00691en_AU
dc.identifier.issn1520-510Xen_AU
dc.identifier.issue11en_AU
dc.identifier.journaltitleInorganic Chemistryen_AU
dc.identifier.pagination6565-6575en_AU
dc.identifier.urihttps://doi.org/10.1021/acs.inorgchem.7b00691en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10313en_AU
dc.identifier.volume56en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectPerovskitesen_AU
dc.subjectOxidesen_AU
dc.subjectMagnetic propertiesen_AU
dc.subjectCationsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectCrystal structureen_AU
dc.subjectL-S couplingen_AU
dc.subjectAntiferromagnetismen_AU
dc.titleStructural and magnetic properties of the osmium double perovskites Ba2–xSrxYOsO6en_AU
dc.typeJournal Articleen_AU
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