Crystal structure of Ln(1/3)NbO(3) (Ln = Nd, Pr) and phase transition in Nd1/3NbO3

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dc.contributor.authorZhang, Zen_AU
dc.contributor.authorHoward, CJen_AU
dc.contributor.authorKennedy, BJen_AU
dc.contributor.authorKnight, KSen_AU
dc.contributor.authorZhou, QDen_AU
dc.date.accessioned2010-09-02T02:20:39Zen_AU
dc.date.available2010-09-02T02:20:39Zen_AU
dc.date.issued2007-06en_AU
dc.date.statistics2007-06en_AU
dc.description.abstractThe crystal structure of the A-site deficient perovskite Ln1/3NbO3 (Ln=Nd, Pr) at room temperature has been determined, for the first time, as orthorhombic in space group Cmmm using high-resolution neutron powder diffraction. Pertinent features are the alternation of unoccupied layers of A-sites and layers partly occupied by Ln cations, as well as out-of-phase tilting of the NbO6 octahedra around an axis perpendicular to the direction of the cation/vacancy ordering. The phase transition behaviour of Nd1/3NbO3 has also been studied in situ. This compound undergoes a continuous phase transition at around 650°C to a tetragonal structure in space group P4/mmm due to the disappearance of the octahedral tilting. The analysis of spontaneous strains shows that this phase transition is tricritical in nature. © 2007, Elsevier Ltd.en_AU
dc.identifier.citationZhang, Z., Howard, C. J., Kennedy, B. J., Knight, K. S., & Zhou, Q. D. (2007). Crystal structure of Ln(1/3)NbO(3) (Ln = Nd, Pr) and phase transition in Nd1/3NbO3. Journal of Solid State Chemistry, 180(6), 1846-1851. doi:10.1016/j.jssc.2007.03.029en_AU
dc.identifier.govdoc2584en_AU
dc.identifier.issn0022-4596en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleJournal of Solid State Chemistryen_AU
dc.identifier.pagination1846-1851en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jssc.2007.03.029en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2424en_AU
dc.identifier.volume180en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectCrystal structureen_AU
dc.subjectPerovskitesen_AU
dc.subjectPhase transformationsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectCationsen_AU
dc.subjectTemperature dependenceen_AU
dc.titleCrystal structure of Ln(1/3)NbO(3) (Ln = Nd, Pr) and phase transition in Nd1/3NbO3en_AU
dc.typeJournal Articleen_AU
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