The interplay of microstructure and magnetism in La3Ni2SbO9

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dc.contributor.authorBattle, PDen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorHadermann, Jen_AU
dc.date.accessioned2016-03-24T04:26:54Zen_AU
dc.date.available2016-03-24T04:26:54Zen_AU
dc.date.issued2014-12en_AU
dc.date.statistics2015-03-24en_AU
dc.description.abstractLa3Ni2SbO9 adopts a perovskite-related structure in which the six-coordinate cation sites are occupied alternately by Ni2+ and a disordered arrangement of Ni2+/Sb5+. A polycrystalline sample has been studied by neutron diffraction in applied magnetic fields of 0≤H/kOe≤50 at 5 K. In 0 kOe, weak magnetic Bragg scattering consistent with the adoption of a G-type ferrimagnetic structure is observed; the ordered component of the magnetic moment was found to be 0.89(7) µB per Ni2+ cation. This increased to 1.60(3) µB in a field of 50 kOe. Transmission electron microscopy revealed variations in the Ni:Sb ratio across crystallites of the sample. It is proposed that these composition variations disrupt the magnetic superexchange interactions within the compound, leading to domain formation and a reduced average moment. The application of a magnetic field aligns the magnetisation vectors across the crystal and the average moment measured by neutron diffraction increases accordingly. The role played by variations in the local chemical composition in determining the magnetic properties invites comparison with the behaviour of relaxor ferroelectrics. © 2014 Elsevier Inc.en_AU
dc.identifier.citationBattle, P. D., Avdeev, M., & Hadermann, J. (2014). The interplay of microstructure and magnetism in La3Ni2SbO9. Journal of Solid State Chemistry, 220, 163-166. doi:10.1016/j.jssc.2014.08.024en_AU
dc.identifier.govdoc6528en_AU
dc.identifier.issn0022-4596en_AU
dc.identifier.journaltitleJournal of Solid State Chemistryen_AU
dc.identifier.pagination163-166en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jssc.2014.08.024en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6664en_AU
dc.identifier.volume220en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectPerovskiteen_AU
dc.subjectPolycrystalsen_AU
dc.subjectMicrostructureen_AU
dc.subjectMagnetismen_AU
dc.subjectFerroelectric materialsen_AU
dc.subjectCationsen_AU
dc.titleThe interplay of microstructure and magnetism in La3Ni2SbO9en_AU
dc.typeJournal Articleen_AU
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