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dc.contributor.authorAlbino, M.
dc.contributor.authorClark, L.
dc.contributor.authorLhoste, J.
dc.contributor.authorPayen, C.
dc.contributor.authorGrenèche, J.-M.
dc.contributor.authorLightfoot, P.
dc.contributor.authorMaisonneuve, V.
dc.contributor.authorLeblanc, M.
dc.identifier.citationAlbino , M , Clark , L , Lhoste , J , Payen , C , Grenèche , J-M , Lightfoot , P , Maisonneuve , V & Leblanc , M 2017 , ' A magnetisation and Mössbauer study of triazole (M 1-x 2+ M x 3+ )M 3+ F 5 (H taz ) 1-x ( taz ) x weberites (M = Fe, Co, Mn, Zn, Ga, V) ' , Dalton Transactions , vol. 46 , no. 16 , pp. 5352-5362 .
dc.identifier.otherPURE: 250139940
dc.identifier.otherPURE UUID: 806befdf-dae1-47ee-803e-3a132ab5638b
dc.identifier.otherBibtex: urn:26d36aef81442a2be51c96a631c9dc1d
dc.identifier.otherScopus: 85018501009
dc.identifier.otherORCID: /0000-0001-7048-3982/work/59464442
dc.identifier.otherWOS: 000399686700029
dc.descriptionWork at the University of St Andrews was supported by the Leverhulme Trust RPG-2013-343.en
dc.description.abstractA series of triazole fluoride weberites (M1-x2+Mx3+)M3+F5(Htaz)1-x(taz)x is obtained by hydrothermal synthesis. All phases are found to be isostructural to ZnAlF5(Htaz) by powder X-ray diffraction. Weberite structures are prone to induce the magnetic frustration of antiferromagnetic interactions originating from the cationic topology of HTB layers. The (nD) magnetic properties of (0D) Co-Ga, (1D) Zn-Fe, (3D) Fe-Ga, Mn-Fe, Co-Fe and Co-V couples are thus reported. Co2+ or Fe2+ magnetic anisotropy induces a negative magnetisation below TN and compensation temperatures for Mn-Fe and Co-Fe couples. All iron 3D magnetic phases exhibit high Néel temperatures, between 81 K and 102 K, and large |θP/TN| ratios, signalling strong magnetic frustration. Their cation site occupancies and the deduced (de)protonation states of the amine are accurately determined by 57Fe Mössbauer spectrometry. In addition, this spectroscopy evidences a subtle effect of the atmosphere that surrounds the samples: the magnetic ordering temperatures TN decrease significantly when the samples are cooled under vacuum with respect to samples that are cooled at ambient pressure. This novel phenomenon, which is highlighted for all studied (3D) triazole iron weberites, is reversible, and thus provides promising perspectives for understanding the underlying mechanism.
dc.relation.ispartofDalton Transactionsen
dc.rights© 2017 the Authors. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at:
dc.subjectQD Chemistryen
dc.titleA magnetisation and Mössbauer study of triazole (M1-x2+Mx3+)M3+F5(Htaz)1-x(taz)x weberites (M = Fe, Co, Mn, Zn, Ga, V)en
dc.typeJournal articleen
dc.contributor.sponsorThe Leverhulme Trusten
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.description.statusPeer revieweden

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