NDLI: The magnetism of rare earth intermetallics RFe4Al8

Content Provider	Springer Nature Link
Author	Kalvius, G. M. Wagner, F. E. Halevy, I. Gal, J.
Copyright Year	2004
Abstract	The YFe4Al8 and ErFe4Al8 intermetallics were studied by57Fe Mössbauer spectroscopy between 2 K and room temperature. The spectra are consistent with iron occupying 8f sites only. There is hardly any difference between corresponding spectra of YFe4Al8 and ErFe4Al8. The Néel temperatures (≈185 K) and saturation hyperfine fields (≈11 T) are practically the same, confirming that the presence of the additional rare earth magnetic sublattice has hardly any influence on the magnetism of the Fe sublattice. From the saturation hyperfine field a low moment of ≈0.7μ B on the Fe ions is deduced. The Mössbauer spectra show that atT N not all Fe ions order magnetically, a fraction of Fe ions remaining in a magnetically non-ordered state. This non-ordered fraction diminishes when the temperature decreases, but never vanishes completely. This peculiar behaviour seems to be characteristic for allx=4 members of the RFe x Al12−x series of alloys. Its origin is not understood at this stage. It might be connected with the complex Fe spin structure exhibited by thex=4 intermetallics and needs to be considered in interpretations of magnetic measurements.
Starting Page	195
Ending Page	207
Page Count	13
File Format	PDF
ISSN	03043843
Journal	Hyperfine Interactions
Volume Number	151
Issue Number	1-4
e-ISSN	15729540
Language	English
Publisher	Springer Netherlands
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Mössbauer spectroscopy rare earth intermetallics magnetic properties Nuclear Physics, Heavy Ions, Hadrons Atoms, Molecules, Clusters and Plasmas Condensed Matter Surfaces and Interfaces, Thin Films
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

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