Magnetic structure of Sr2Fe2O5 brownmillerite by single-crystal Mössbauer spectroscopy

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dc.contributor.authorWaerenborgh, JCen_AU
dc.contributor.authorTsipis, EVen_AU
dc.contributor.authorAuckett, JEen_AU
dc.contributor.authorLing, CDen_AU
dc.contributor.authorKharton, VVen_AU
dc.date.accessioned2014-06-23T03:40:26Zen_AU
dc.date.available2014-06-23T03:40:26Zen_AU
dc.date.issued2013-09-01en_AU
dc.date.statistics2014-06-23en_AU
dc.description.abstractIn order to determine orientation of the Fe3+ magnetic moments and electric field gradient (efg) axes in the brownmillerite-type strontium ferrite structure for both iron sublattices where the efg tensor is not axially symmetric, the Mössbauer spectra of powdered and oriented single-crystal Sr2Fe2O5 were analyzed by solving the complete Hamiltonian for hyperfine interactions in the excited and ground states of the 57Fe nuclei. The magnetic moments of both octahedrally and tetrahedrally coordinated iron cations lie on the ac-plane of the orthorhombic unit cell and are parallel to the shortest c-axis, whilst the main efg axes are parallel to the longest crystallographic axis, b. This orientation is similar to that in Ca2Fe2O5, in spite of the structural differences of strontium and calcium ferrite brownmillerites at low temperatures. © 2013, Elsevier Ltd.en_AU
dc.identifier.citationWaerenborgh, J. C., Tsipis, E. V., Auckett, J. E., Ling, C. D., & Kharton, V. V. (2013). Magnetic structure of Sr2Fe2O5 brownmillerite by single-crystal Mössbauer spectroscopy. Journal of Solid State Chemistry, 205, 5-9. doi:10.1016/j.jssc.2013.06.030en_AU
dc.identifier.govdoc5449en_AU
dc.identifier.issn0022-4596en_AU
dc.identifier.journaltitleJournal of Solid State Chemistryen_AU
dc.identifier.pagination5-9en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jssc.2013.06.030en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5706en_AU
dc.identifier.volume205en_AU
dc.language.isoenen_AU
dc.publisherAcademic Press Inc Elsevier Scienceen_AU
dc.subjectStrontiumen_AU
dc.subjectSpectroscopyen_AU
dc.subjectMagnetismen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectNeutronsen_AU
dc.subjectDiffractionen_AU
dc.titleMagnetic structure of Sr2Fe2O5 brownmillerite by single-crystal Mössbauer spectroscopyen_AU
dc.typeJournal Articleen_AU
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