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Extending the family of V4+ S = ½ kagome antiferromagnets

Research output: Contribution to journalArticle

Author(s)

Lucy Mary Clark, Farida Himeur Aidoudi, Cameron Black, Kasun Sankalpa Athukorala Arachchige, Alexandra Martha Zoya Slawin, Russell Edward Morris, Philip Lightfoot

School/Research organisations

Abstract

The ionothermal synthesis, structure, and magnetic susceptibility of a novel inorganic–organic hybrid material, imidazolium vanadium(III,IV) oxyfluoride [C3H5N2][V9O6F24(H2O)2] (ImVOF) are presented. The structure consists of inorganic vanadium oxyfluoride slabs with kagome layers of V4+ S = 1/2 equation image ions separated by a mixed valence layer. These inorganic slabs are intercalated with imidazolium cations. Quinuclidinium (Q) and pyrazinium (Pyz) cations can also be incorporated into the hybrid structure type to give QVOF and PyzVOF analogues, respectively. The highly frustrated topology of the inorganic slabs, along with the quantum nature of the magnetism associated with V4+, means that these materials are excellent candidates to host exotic magnetic ground states, such as the highly sought quantum spin liquid. Magnetic susceptibility measurements of all samples suggest an absence of conventional long-range magnetic order down to 2 K despite considerable antiferromagnetic exchange.
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Details

Original languageEnglish
Pages (from-to)15457-15461
Number of pages5
JournalAngewandte Chemie International Edition
Volume54
Issue number51
Early online date30 Oct 2015
DOIs
Publication statusPublished - 14 Dec 2015

    Research areas

  • Crystal growth, Fluorides, Magnetic properties, Vanadium, X-ray diffraction

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