Abstract
A57Fe Mössbauer study of Nd(Fe0.5Co0.5)9Si2 has been carried out over the temperature range 4.2–295 K. The analysis of the Mössbauer spectra, combined with X-ray diffraction on a magnetically aligned powder sample, shows that the easy-magnetization direction lies in the basal plane of this tetragonal BaCd11 structure at 295 K, but is canted at an angle of 29(5)‡ above the basal plane at 4.2 K. AC susceptibility measurements performed in the temperature range 77–295 K reveal a peak spanning the range 87–106 K, with the maximum occurring at 96 K. From these data, we conclude that there is a spin-reorientation from basal c-plane to a canted magnetic structure in this compound, with an onset at ∼96 K as the temperature decreases.
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Cadogan, J.M., Li, HS., Suharyana et al. A57Fe Mössbauer study of Nd(Fe0.5Co0.5)9Si2 . Hyperfine Interact 94, 1885–1890 (1994). https://doi.org/10.1007/BF02063712
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DOI: https://doi.org/10.1007/BF02063712