Magnetism of coupled spin tetrahedra in ilinskite-type KCu 5 O 2 (SeO 3 ) 2 Cl 3

Synthesis, thermodynamic properties, and microscopic magnetic model of ilinskite-type KCu O (SeO ) Cl built by corner-sharing Cu tetrahedra are reported, and relevant magnetostructural correlations are discussed. Quasi-one-dimensional magnetic behavior with the short-range order around 50 K is ratio...

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Bibliographic Details
Published in:Scientific reports 2018-02, Vol.8 (1), p.2379
Main Authors: Badrtdinov, Danis I, Kuznetsova, Elena S, Verchenko, Valeriy Yu, Berdonosov, Peter S, Dolgikh, Valeriy A, Mazurenko, Vladimir V, Tsirlin, Alexander A
Format: Article
Language:English
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Summary:Synthesis, thermodynamic properties, and microscopic magnetic model of ilinskite-type KCu O (SeO ) Cl built by corner-sharing Cu tetrahedra are reported, and relevant magnetostructural correlations are discussed. Quasi-one-dimensional magnetic behavior with the short-range order around 50 K is rationalized in terms of weakly coupled spin ladders (tubes) having a complex topology formed upon fragmentation of the tetrahedral network. This fragmentation is rooted in the non-trivial effect of the SeO groups that render the Cu-O-Cu superexchange strongly ferromagnetic even at bridging angles exceeding 110°.
ISSN:2045-2322
DOI:10.1038/s41598-018-20350-z