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Acentric Pseudo-Kagome Structures: The Solid Solution (Co1-xNix)(3)Sb4O6F6
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
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2014 (English)In: Chemistry of Materials, ISSN 0897-4756, E-ISSN 1520-5002, Vol. 26, no 12, 3631-3636 p.Article in journal (Refereed) Published
Abstract [en]

Compounds within the solid solution (Co1-xNix)(3)Sb4O6F6 were prepared by the hydrothermal method. The compounds crystallize in the noncentrosymmetric cubic space group I (4) over bar 3m with unit cell parameters a = 8.176(1) angstrom for M = Co and a = 8.0778(1) angstrom for M = Ni. The crystal structure is made up by corner sharing [MO2F4] octahedra via the fluorine atoms. [Sb4O6E4] supertetrahedra (T2) consisting of four [SbO3E] groups (E being the stereo-chemically active lone-pair on Sb) that share O atoms with the [MO2F2](n) network. Magnetic ordering phenomena are observed with two characteristic temperatures, T-N and T*, in the range from 67 to 170 K, that evolve gradually with composition and collapse for M = Co (x = 0) to one transition. T-N is assigned to a transition into a long-range ordered antiferromagnetic phase, and T* marks a temperature in the range of 45 to 65 K where field cooled (FC) and zero field cooled (ZFC) susceptibility splits. The latter is tentatively attributed to a canting of the spin moments.

Place, publisher, year, edition, pages
2014. Vol. 26, no 12, 3631-3636 p.
National Category
Chemical Sciences
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URN: urn:nbn:se:su:diva-106334DOI: 10.1021/cm500339zISI: 000338089500009OAI: oai:DiVA.org:su-106334DiVA: diva2:736603
Note

AuthorCount:7;

Available from: 2014-08-07 Created: 2014-08-04 Last updated: 2017-12-05Bibliographically approved

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