Crystal structures and phase transitions in Sr2InTaO6 perovskite

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dc.contributor.authorZhou, Qen_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorAvdeev, Men_AU
dc.date.accessioned2013-09-02T05:41:47Zen_AU
dc.date.available2013-09-02T05:41:47Zen_AU
dc.date.issued2012-10-07en_AU
dc.date.statistics2013-09-02en_AU
dc.description.abstractThe preparation and crystal structure of the double perovskite oxide Sr2InTaO6 are reported. This oxide has a monoclinic structure in space group P21/n at room temperature, where In and Ta display a rock-salt type ordering with a = 5.73356(10), b = 5.74052(10), c = 8.10905(14) Å and β = 90.022(6)°. Variable temperature neutron diffraction measurements demonstrate this displays the sequence of phase transitions P21/n⟶605∘CI2/m⟶705∘CI4/m⟶930∘CFm3ˉm as a consequence of the sequential loss of tilting of the corner shared octahedra upon heating. The evolution of Sr2InTaO6 crystal structure upon heating is analysed and described in terms of symmetry-adapted distortion modes. The GM4+ and X3+, that are responsible for anti-phase and in-phase tilting, respectively, are highly temperature dependent, with the GM4+ mode having the largest amplitude at room temperature. © 2013, Springer.en_AU
dc.identifier.citationZhou, Q., Kennedy, B.J, & Avdeev, M. (2013). Crystal structures and phase transitions in Sr2InTaO6 perovskite. Physics & Chemistry of Minerals, 40(8), 603-610. doi:10.1007/s00269-012-0545-5en_AU
dc.identifier.govdoc5049en_AU
dc.identifier.issn1432-2021en_AU
dc.identifier.issue8en_AU
dc.identifier.journaltitlePhysics & Chemistry of Mineralsen_AU
dc.identifier.pagination603-610en_AU
dc.identifier.urihttp://dx.doi.org/10.1007/s00269-012-0545-5en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4656en_AU
dc.identifier.volume40en_AU
dc.language.isoenen_AU
dc.publisherSpringeren_AU
dc.subjectPerovskiteen_AU
dc.subjectOxidesen_AU
dc.subjectHeaten_AU
dc.subjectCationsen_AU
dc.subjectTantalumen_AU
dc.subjectIndiumen_AU
dc.subjectMonoclinic latticesen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectCrystal structureen_AU
dc.titleCrystal structures and phase transitions in Sr2InTaO6 perovskiteen_AU
dc.typeJournal Articleen_AU
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