<div class="csl-bib-body">
<div class="csl-entry">Zheng, Q., Gumeniuk, R., Borrmann, H., Schnelle, W., Tsirlin, A. A., Rosner, H., Burkhardt, U., Reissner, M., Grin, Y., & Leithe-Jasper, A. (2016). Ternary borides Nb₇Fe₃B₈ and Ta₇Fe₃B₈ with Kagome-type iron framework. <i>Dalton Transactions</i>, <i>45</i>(23), 9590–9600. https://doi.org/10.1039/c6dt01164k</div>
</div>
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dc.identifier.issn
1477-9226
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/149643
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dc.description.abstract
Two new ternary borides TM₇Fe₃B₈ (TM = Nb, Ta) were synthesized by high-temperature thermal treatment of samples obtained by arc-melting. This new type of structure with space group P6/mmm, comprises TM slabs containing isolated planar hexagonal [B₆] rings and iron centered TM columns in a Kagome type of arrangement. Chemical bonding analysis in Nb₇Fe₃B₈ by means of the electron localizability approach reveals two-center interactions forming the Kagome net of Fe and embedded B, while weaker multicenter bonding present between this net and Nb atoms. Magnetic susceptibility measurements reveal antiferromagnetic order below TN = 240 K for Nb₇Fe₃B₈ and TN = 265 K for Ta₇Fe₃B₈. Small remnant magnetization below 0.01μB per f.u. is observed in the antiferromagnetic state. The bulk nature of the magnetic transistions was confirmed by the hyperfine splitting of the Mössbauer spectra, the sizable anomalies in the specific heat capacity, and the kinks in the resistivity curves. The high-field paramagnetic susceptibilities fitted by the Curie-Weiss law show effective paramagnetic moments μeff ≈ 3.1μB/Fe in both compounds. The temperature dependence of the electrical resistivity also reveals metallic character of both compounds. Density functional calculations corroborate the metallic behaviour of both compounds and demonstrate the formation of a sizable local magnetic moment on the Fe-sites. They indicate the presence of both antiferro- and ferrromagnetic interactions.
en
dc.language.iso
en
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dc.relation.ispartof
Dalton Transactions
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dc.subject
Inorganic Chemistry
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dc.title
Ternary borides Nb₇Fe₃B₈ and Ta₇Fe₃B₈ with Kagome-type iron framework
en
dc.type
Artikel
de
dc.type
Article
en
dc.description.startpage
9590
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dc.description.endpage
9600
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dc.type.category
Original Research Article
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tuw.container.volume
45
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tuw.container.issue
23
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tuw.journal.peerreviewed
true
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tuw.peerreviewed
true
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wb.publication.intCoWork
International Co-publication
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tuw.researchTopic.id
M8
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tuw.researchTopic.id
M2
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tuw.researchTopic.name
Structure-Property Relationship
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.value
33
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tuw.researchTopic.value
67
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dcterms.isPartOf.title
Dalton Transactions
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tuw.publication.orgunit
E138-05 - Forschungsbereich Solid State Spectroscopy