Primitive tetragonal intermediate in the orthorhombic-cubic phase transition of perovskite-type strontium niobate Sr0.92NbO3

Simple item page
dc.contributor.authorMacquart, RBen_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorAvdeev, Men_AU
dc.date.accessioned2010-10-18T00:33:49Zen_AU
dc.date.available2010-10-18T00:33:49Zen_AU
dc.date.issued2010-10en_AU
dc.date.statistics2010-10en_AU
dc.description.abstractThe Sr deficient perovskite Sr0.92NbO3 was synthesized from Sr5Nb4O15 and Nb and its crystal structure was determined using powder neutron diffraction. At room temperature the structure is orthorhombic in space group Pnma with both in-phase and out-of-phase tilting of the NbO6 octahedra. High temperature measurements have shown that the oxide undergoes a sequence of phase transitions with increasing temperature: Pnma→P4/mbm→Pm3¯m. The intermediate tetragonal phase has only in-phase tilts of the NbO6 octahedra, rather than the out-of-phase tilts present in the more commonly observed I4/mcm structure, due to initial softening at the M point rather than R point. The tetragonal phase exists only over a very narrow temperature range. The importance of M–M and M–O bonding in controlling the transition temperatures in SrMO3 perovskites is discussed. © 2010, Elsevier Ltd.en_AU
dc.identifier.citationMacquart, R. B., Kennedy, B. J., & Avdeev, M. (2010). Primitive tetragonal intermediate in the orthorhombic-cubic phase transition of perovskite-type strontium niobate Sr0.92NbO3. Journal of Solid State Chemistry, 183(10), 2400-2405. doi:10.1016/j.jssc.2010.08.001en_AU
dc.identifier.govdoc2824en_AU
dc.identifier.issn0022-4596en_AU
dc.identifier.issue10en_AU
dc.identifier.journaltitleJournal of Solid State Chemistryen_AU
dc.identifier.pagination2400-2405en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jssc.2010.08.001en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2683en_AU
dc.identifier.volume183en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectPerovskiteen_AU
dc.subjectPhase transformationsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectStrontiumen_AU
dc.subjectNiobatesen_AU
dc.subjectCrystal structureen_AU
dc.titlePrimitive tetragonal intermediate in the orthorhombic-cubic phase transition of perovskite-type strontium niobate Sr0.92NbO3en_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles