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  Crystal structures and magnetic properties of dimorphic Li3OsO4

Feng, H. L., Reehuis, M., Hoser, A., Valldor, M., & Jansen, M. (2019). Crystal structures and magnetic properties of dimorphic Li3OsO4. Solid State Sciences, 97: 106009, pp. 1-6. doi:10.1016/j.solidstatesciences.2019.106009.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-81C4-B Version Permalink: http://hdl.handle.net/21.11116/0000-0005-81C6-9
Genre: Journal Article

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 Creators:
Feng, Hai L.1, Author              
Reehuis, Manfred2, Author
Hoser, Andreas2, Author
Valldor, Martin3, Author              
Jansen, Martin4, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2External Organizations, ou_persistent22              
3Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863454              
4Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              

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 Abstract: Rocksalt-type oxides Li3OsO4 with disordered and ordered arrangements of Li and Os were synthesized. The disordered phase crystallizes in the ideal rocksalt structure with cubic space group Fm3m , while the ordered polymorph adopts the monoclinic Na3BiO4-type structure (space group P2/c). The analyses of X-ray and neutron diffraction data of monoclinic Li3OsO4 indicate that there is a considerable anti-site disorder of Li and Os and that the sample is nonstoichiometric [Li3.045(5)Os0.955(5)O4]. In monoclinic Li3OsO4 the OsO6 octahedra are not isolated from each other but they form edge-sharing zigzag chains. Both cubic and monoclinic Li3OsO4 are electrically semiconducting. Cubic Li3OsO4 does not show any sign of magnetic order down to 2 K, whereas the chi(T) data of monoclinic Li3OsO4 display an anomaly at 310 K. However, the neutron diffraction study indicated no evidence of long-range magnetic order. The anomaly at 310 K may be caused by short-range antiferromagnetic ordering within the individual Os chains.

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Language(s): eng - English
 Dates: 2019-12-182019-12-18
 Publication Status: Published in print
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Title: Solid State Sciences
Source Genre: Journal
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Publ. Info: Paris : Elsevier Masson SAS
Pages: - Volume / Issue: 97 Sequence Number: 106009 Start / End Page: 1 - 6 Identifier: ISSN: 1293-2558
CoNE: https://pure.mpg.de/cone/journals/resource/954926245540