Impact of lanthanoid substitution on the structural and physical properties of an infinite-layer iron oxide

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dc.contributor.authorYamamoto, Ten_AU
dc.contributor.authorOhkubo, Hen_AU
dc.contributor.authorTassel, Cen_AU
dc.contributor.authorHayashi, Nen_AU
dc.contributor.authorKawasaki, Sen_AU
dc.contributor.authorOkada, Ten_AU
dc.contributor.authorYagi, Ten_AU
dc.contributor.authorHester, JRen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorKobayashi, Yen_AU
dc.contributor.authorKageyama, Hen_AU
dc.date.accessioned2021-06-03T00:26:06Zen_AU
dc.date.available2021-06-03T00:26:06Zen_AU
dc.date.issued2016-11-01en_AU
dc.date.statistics2021-04-19en_AU
dc.description.abstractThe effect of lanthanoid (Ln = Nd, Sm, Ho) substitution on the structural and physical properties of the infinite-layer iron oxide SrFeO2 was investigated by X-ray diffraction (XRD) at ambient and high pressure, neutron diffraction, and 57Fe Mössbauer spectroscopy. Ln for Sr substituted samples up to ∼30% were synthesized by topochemical reduction using CaH2. While the introduction of the smaller Ln3+ ion reduces the a axis as expected, we found an unusual expansion of the c axis as well as the volume. Rietveld refinements along with pair distribution function analysis revealed the incorporation of oxygen atoms between FeO2 layers with a charge-compensated composition of (Sr1–xLnx)FeO2+x/2, which accounts for the failed electron doping to the FeO2 layer. The incorporated partial apical oxygen or the pyramidal coordination induces incoherent buckling of the FeO2 sheet, leading to a significant reduction of the Néel temperature. High-pressure XRD experiments for (Sr0.75Ho0.25)FeO2.125 suggest a possible stabilization of an intermediate spin state in comparison with SrFeO2, revealing a certain contribution of the in-plane Fe–O distance to the pressure-induced transition. © 2016 American Chemical Societyen_AU
dc.identifier.citationYamamoto, T., Ohkubo, H., Tassel, C., Hayashi, N., Kawasaki, S., Okada, T., Yagi, T., Hester, J., Avdeev, M., Kobayashi, Y., & Kageyama, H. (2016). Impact of lanthanoid substitution on the structural and physical properties of an infinite-layer iron oxide. Inorganic Chemistry, 55(22), 12093-12099. doi:10.1021/acs.inorgchem.6b02513en_AU
dc.identifier.issn1520-510Xen_AU
dc.identifier.issue22en_AU
dc.identifier.journaltitleInorganic Chemistryen_AU
dc.identifier.pagination12093-12099en_AU
dc.identifier.urihttps://doi.org/10.1021/acs.inorgchem.6b02513en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10792en_AU
dc.identifier.volume55en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectIronen_AU
dc.subjectRedox reactionsen_AU
dc.subjectCrystal latticesen_AU
dc.subjectOxygenen_AU
dc.titleImpact of lanthanoid substitution on the structural and physical properties of an infinite-layer iron oxideen_AU
dc.typeJournal Articleen_AU
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