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  Buckled Honeycomb Lattice Compound Sr3CaOs2O9 Exhibiting Antiferromagnetism above Room Temperature

Thakur, G. S., Hansen, T. C., Schnelle, W., Guo, S., Janson, O., Van Den Brink, J., et al. (2022). Buckled Honeycomb Lattice Compound Sr3CaOs2O9 Exhibiting Antiferromagnetism above Room Temperature. Chemistry of Materials, 34, 4741-4750. doi:10.1021/acs.chemmater.2c00740.

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 Creators:
Thakur, Gohil S.1, Author              
Hansen, Thomas C.2, Author
Schnelle, Walter3, Author              
Guo, Shuping2, Author
Janson, Oleg2, Author
Van Den Brink, Jeroen2, Author
Felser, Claudia4, Author              
Jansen, Martin2, Author
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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Free keywords: Antiferromagnetism, Buckling, Copper compounds, Crystal structure, Honeycomb structures, Magnetic properties, Neutron diffraction, Perovskite, Specific heat, Antiferromagnetic exchange, Antiferromagnetic orderings, C-space, Crystals structures, Honeycomb lattices, Neutron diffraction measurements, Space Groups, Theoretical investigations, Triple perovskite, Strontium compounds
 Abstract: Synthesis, crystal structure, and magnetic properties of a new 2:1 ordered triple perovskite Sr3CaOs2O9 are reported. The compound crystallizes in a P21/c space group and features a unique buckled honeycomb lattice of osmium. It exhibits long-range antiferromagnetic ordering with a high Néel temperature of 385 K as confirmed by susceptibility, heat capacity, and neutron diffraction measurements and is electrically insulating. This compound is also the first example of a 2:1-ordered osmate perovskite. Theoretical investigations indicate that Sr3CaOs2O9 features a sizeable antiferromagnetic exchange between the puckered planes resulting in a high TN. The magnetic properties of the known compound Sr3CaRu2O9 are elucidated in comparison. It shows antiferromagnetic order below TN ≈ 200 K. © 2022 The Authors. Published by American Chemical Society.

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Language(s): eng - English
 Dates: 2022-05-132022-05-13
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1021/acs.chemmater.2c00740
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Title: Chemistry of Materials
  Abbreviation : Chem. Mater.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 34 Sequence Number: - Start / End Page: 4741 - 4750 Identifier: ISSN: 0897-4756
CoNE: https://pure.mpg.de/cone/journals/resource/954925561571