| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1487959 | Materials Research Bulletin | 2014 | 6 Pages |
•The reported structure of KZnFe(PO4)2 is closely related to the zeolite ABW-type.•The structure is described in detail.•The IR and Mössbauer spectroscopy results are reported.•The magnetic properties are developed.
The new iron phosphate KZnFe(PO4)2 has been synthesized by flux method and solid state reaction, and characterized by X-ray diffraction, IR, Mössbauer spectroscopy and magnetic susceptibility. This compound crystallizes in the monoclinic space group C2/c with the cell parameters: a = 13.514(4) Å, b = 13.273(6) Å, c = 8.742(3) Å and β = 100.07(2)°. It displays strong similarities with the phosphates KCoAl(PO4)2 and NaCoPO4 and features some analogies with the zeolite-ABW structural type. 3D framework is built up by a corner-sharing between MO4 (M = 0.5 Zn + 0.5 Fe) and PO4 tetrahedra. The K+ ions are found within crossing tunnels perpendicular to the (1 0 0), (0 1 0) and (0 0 1) planes, delimited by this framework. A Mössbauer study confirmed the presence of Fe3+ ions in a tetrahedral environment. Magnetic measurements revealed an antiferromagnetic behavior with TN = 8.5 K.
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