Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9781615 | Journal of Physics and Chemistry of Solids | 2005 | 4 Pages |
Abstract
A selenate analogue of sodium Jarosite NaFe3(SeO4)2(OH)6 has been synthesized by precipitation from aqueous solution. We have newly determined the structural parameters by powder X-ray diffraction refinement. The structure is similar to that of sulfate Jarosite analogues, while the unit cell volume is larger. The temperature dependence of the magnetic susceptibility shows a cusp-like anomaly at 45Â K, and the spontaneous magnetization appears below 33Â K. We have measured the Mössbauer spectra of 57Fe3+(S=2/5) ions, and revealed an anomalous fluctuation of the hyperfine field.
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Authors
Noriaki Oba, Chishiro Michioka, Masaki Kato, Kazuyoshi Yoshimura, Ko Mibu,