Crystal structure and monoclinic distortion of glaserite-type Ba3MnSi2O8

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dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorXia, Qen_AU
dc.contributor.authorSale, Men_AU
dc.contributor.authorAllison, MCen_AU
dc.contributor.authorLing, CDen_AU
dc.date.accessioned2021-06-30T02:04:09Zen_AU
dc.date.available2021-06-30T02:04:09Zen_AU
dc.date.issued2018-10-01en_AU
dc.date.statistics2021-06-29en_AU
dc.description.abstractCrystal structure and magnetic properties of glaserite-type Ba3MnSi2O8 were investigated using variable temperature neutron powder diffraction and magnetometry. At room temperature the composition is hexagonal and the crystal structure is best described by the P-3m1 space group (a~ 5.7 Å, c~ 7.3 Å) with the apical oxygen atom modelled on a split site. On cooling below ~ 250 K the structure undergoes a phase transition into a monoclinic C2/c form (√3ahex, ahex, 2chex, β~ 90°). Analysing diffraction data in terms of symmetry-adapted distortion modes suggests that the transition is primarily driven by increasing in-plane displacements of O1, which in turn results in the coupled tilting of [SiO4] and [MnO6] octahedra and in-plane displacements of Ba1 atoms. Magnetic susceptibility measurements and neutron powder diffraction data show no evidence for long-range magnetic ordering down to 1.6 K, although the development of magnetic diffuse scattering suggests that a magnetic transition may take place at lower temperature. Crown Copyright © 2018 Published by Elsevier Inc.en_AU
dc.identifier.citationAvdeev, M., Xia, Q., Sale, M., Allison, M., & Ling, C. D. (2018). Crystal structure and monoclinic distortion of glaserite-type Ba3MnSi2O8. Journal of Solid State Chemistry, 266, 1-8, doi:10.1016/j.jssc.2018.07.001en_AU
dc.identifier.issn0022-4596en_AU
dc.identifier.journaltitleJournal of Solid State Chemistryen_AU
dc.identifier.pagination1-8en_AU
dc.identifier.urihttps://doi.org/10.1016/j.jssc.2018.07.001en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10970en_AU
dc.identifier.volume266en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectCrystal structureen_AU
dc.subjectPhase transformationsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectMonoclinic latticesen_AU
dc.subjectMagnetic susceptibilityen_AU
dc.subjectMagnetic propertiesen_AU
dc.titleCrystal structure and monoclinic distortion of glaserite-type Ba3MnSi2O8en_AU
dc.typeJournal Articleen_AU
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