| Autor: |
Keerthisinghe N; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States., Berseneva AA; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States., Klepov VV; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States., Morrison G; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States., Zur Loye HC; Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States. |
| Jazyk: |
angličtina |
| Zdroj: |
Inorganic chemistry [Inorg Chem] 2021 Sep 20; Vol. 60 (18), pp. 14318-14329. Date of Electronic Publication: 2021 Sep 01. |
| DOI: |
10.1021/acs.inorgchem.1c01889 |
| Abstrakt: |
Inverse weberites are of interest as geometrically frustrated magnetic materials due to their unique cation arrangement. We have synthesized nine isostructural materials that adopt the inverse weberite crystal structure, which consists of cross-linked kagome layers. These materials, having the general formula M II M III F 5 (H 2 O) 2 (M II = Co, Mn, Ni, Zn; M III = Ga, Cr, Fe, V), were synthesized using mild hydrothermal conditions, which yielded phase-pure samples after optimization of the reaction conditions. Their crystal structures and optical, thermal, and magnetic behavior were characterized using single-crystal X-ray diffraction, UV-vis spectroscopy, thermogravimetric analysis, and measurement of the magnetic susceptibility and isothermal magnetization data, respectively. Three distinct types of magnetism were observed, including simple paramagnetism, antiferromagnetism, and canted antiferromagnetism; the last type is accompanied by a high frustration index f in the range 4.16-8.09. We demonstrated that the magnetic behavior of inverse weberites depends on the presence or absence of unpaired-electron-containing cations on the two distinct crystallographic sites, which can be employed for the prediction of the magnetic properties of other compounds in this rich and diverse family. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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