S = 2 Spin Ladders in the Sulfide Oxide BaFe2S2O.

Autor:	Valldor, Martin, Adler, Peter, Prots, Yurii, Burkhardt, Ulrich, Tjeng, Liu Hao
Předmět:	SULFUR X-ray diffraction MOESSBAUER spectrometers ENERGY dispersive X-ray spectroscopy IRON
Zdroj:	European Journal of Inorganic Chemistry; Dec2014, Vol. 2014 Issue 36, p6150-6155, 6p
Abstrakt:	Pure powder and small single crystals of BaFe2S2O were obtained by solid-state reaction between BaO, Fe, and S in closed silica ampoules. The crystal structure contains a magnetic ladderlike sublattice of high-spin Fe2+ (d6) tetrahedrally coordinated by three S and one O atoms. Strong antiferromagnetic spin interactions are observed far above the Néel transition ( TN = 260 K). 57Fe Mössbauer spectra show typical features of Fe2+ as a doublet with large quadrupole splitting above TN and combined electric and magnetic hyperfine interaction in the magnetically ordered phase. A structural transition upon the magnetic order is discussed. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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