Magnetic phase diagram of Sr3Fe2O7-delta

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dc.contributor.authorPeets, DCen_AU
dc.contributor.authorKim, JHen_AU
dc.contributor.authorDosanjh, Pen_AU
dc.contributor.authorReehuis, Men_AU
dc.contributor.authorMaljuk, Aen_AU
dc.contributor.authorAliouane, Nen_AU
dc.contributor.authorUlrich, Cen_AU
dc.contributor.authorKeimer, Ben_AU
dc.date.accessioned2015-10-20T00:01:13Zen_AU
dc.date.available2015-10-20T00:01:13Zen_AU
dc.date.issued2013-06-10en_AU
dc.date.statistics2015-10-15en_AU
dc.description.abstractMagnetometry, electrical transport, and neutron scattering measurements were performed on single crystals of the Fe4+-containing perovskite-related phase Sr3Fe2O7−δ as a function of oxygen content. Although both the crystal structure and electron configuration of this compound are closely similar to those of well-studied ruthenates and manganates, it exhibits very different physical properties. The fully oxygenated compound (δ=0) exhibits a charge-disproportionation transition at TD=340 K, and an antiferromagnetic transition at TN=115 K. For temperatures T≤TD, the material is a small-gap insulator; the antiferromagnetic order is incommensurate, which implies competing exchange interactions between the Fe4+ moments. The fully deoxygenated compound (δ=1) is highly insulating, and its Fe3+ moments exhibit commensurate antiferromagnetic order below TN∼600 K. Compounds with intermediate δ exhibit different order with lower TN, likely as a consequence of frustrated exchange interactions between Fe3+ and Fe4+ sublattices. A previous proposal that the magnetic transition temperature reaches zero is not supported. © 2013, American Physical Society.en_AU
dc.identifier.articlenumber214410en_AU
dc.identifier.citationPeets, D. C., Kim, J. H., Dosanjh, P., Reehuis, M., Maljuk, A., Aliouane, N., Ulrich, C., & Keimer, B. (2013). Magnetic phase diagram of Sr3Fe2O7-delta. Physical Review B, 87(21). doi:10.1103/PhysRevB.87.214410en_AU
dc.identifier.govdoc6187en_AU
dc.identifier.issn1098-0121en_AU
dc.identifier.issue21en_AU
dc.identifier.journaltitlePhysical Review Ben_AU
dc.identifier.pagination8en_AU
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.87.214410en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6339en_AU
dc.identifier.volume87en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.subjectMonocrystalsen_AU
dc.subjectPerovskiteen_AU
dc.subjectOxygenen_AU
dc.subjectElectronic structureen_AU
dc.subjectManganatesen_AU
dc.subjectAntiferromagnetic materialsen_AU
dc.titleMagnetic phase diagram of Sr3Fe2O7-deltaen_AU
dc.typeJournal Articleen_AU
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