Crystal structures and cation ordering of Sr2AlSbO6 and Sr2CoSbO6.

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dc.contributor.authorFaik, Aen_AU
dc.contributor.authorGateshki, Men_AU
dc.contributor.authorIgartua, JMen_AU
dc.contributor.authorPizarro, JLen_AU
dc.contributor.authorInsausti, Men_AU
dc.contributor.authorKaindl, Ren_AU
dc.contributor.authorGrzechnik, Aen_AU
dc.date.accessioned2009-06-11T05:47:24Zen_AU
dc.date.accessioned2010-04-30T05:06:05Zen_AU
dc.date.available2009-06-11T05:47:24Zen_AU
dc.date.available2010-04-30T05:06:05Zen_AU
dc.date.issued2008-08en_AU
dc.date.statistics2008-08en_AU
dc.description.abstractThe two double perovskite oxides Sr2AlSbO6 and Sr2CoSbO6 were prepared and their structures studied with the X-ray powder diffraction method. At room temperature the crystal structure of Sr2AlSbO6 is cubic (Fm (3) over barm), with a = 5.6058(1) angstrom. It was found that depending on the preparation conditions, the Al3+ gild Sb5+ cations can be either entirely or partially ordered. In the case of the partially ordered Sr2AlSbO6 sample, the extension of cation ordering was estimated from the hkl-dependent broadening of the diffraction peaks and the results were interpreted as evidence of the formation of anti-phase domains in the material. Low-temperature Raman spectroscopic measurements demonstrated that the cubic phase of Sr2AlSbO6 is stable down to 79 K. The room-temperature crystal structure of Sr2CoSbO6, is trigonal (space group R (3) over bar) with a = 5.6058(1) angstrom and c = 13.6758(3) angstrom. At 470 K, however, the material undergoes a continuous phase transition and its structure is converted to cubic (space group Fm (3) over barm). The studied Sr2CoSbO6 sample was partially ordered, but unlike Sr2AlSbO6, no indication of the formation of anti-phase domains was observed. © 2008, Elsevier Ltd.en_AU
dc.identifier.citationFaik, A., Gateshki, M., Igartua, J. M., Pizarro, J. L., Insausti, M., Kaindl, R., & Grzechnik. A. (2008). Crystal structures and cation ordering of Sr2AlSbO6 and Sr2CoSbO6. Journal of Solid State Chemistry, 181(8), 1759-1766. doi:10.1016/j.jssc.2008.03.029en_AU
dc.identifier.govdoc1390en_AU
dc.identifier.issn0022-4596en_AU
dc.identifier.issue8en_AU
dc.identifier.journaltitleJournal of Solid State Chemistryen_AU
dc.identifier.pagination1759-1766en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jssc.2008.03.029en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/1341en_AU
dc.identifier.volume181en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectPerovskitesen_AU
dc.subjectCrystal structureen_AU
dc.subjectCationsen_AU
dc.subjectDiffractionen_AU
dc.subjectRaman spectroscopyen_AU
dc.subjectTemperature rangeen_AU
dc.titleCrystal structures and cation ordering of Sr2AlSbO6 and Sr2CoSbO6.en_AU
dc.typeJournal Articleen_AU
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