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A Mössbauer and NMR spectroscopy study of RFe12−xMx intermetallics

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Abstract

Several members of the ThMn12 type compounds RFe12−xMx with R=Y Gd, Er, Sm; M=V, Mo, Ti, W, Si were studied with57Fe Mössbauer spectroscopy. For GdFe10Mo2 and YFe10V2 NMR spectra at 4.2 K were also taken. The spectra were analyzed by taking into account the preferential distribution of the M atoms over the 3 crystallographic sites available for both Fe and M atoms in the ThMn12 lattice. A binomial distribution was used for calculating the probability of the possible nearest neighbor configurations of the Fe atoms, leading to fits with up to 4 separate subspectra for each of the 3 crystallographic sites 8i, 8j, and 8f which provided a consistent description of the experimental data. A spin reorientation transition was found for ErFe10V2 in the temperature range 4.2 K-77 K.

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Authors and Affiliations

  1. Experimentalphysik VI, Ruhr-Universität, PB 102148, 4630, Bochum, BR, Deutschland

    Th. Sinnemann, K. Erdmann & M. Rosenberg

  2. Philips Research Laboratories, 5600 JA, Eindhoven, The Netherlands

    K. H. J. Buschow

Authors
  1. Th. Sinnemann
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  2. K. Erdmann
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  3. M. Rosenberg
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  4. K. H. J. Buschow
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Sinnemann, T., Erdmann, K., Rosenberg, M. et al. A Mössbauer and NMR spectroscopy study of RFe12−xMx intermetallics. Hyperfine Interact 50, 675–683 (1989). https://doi.org/10.1007/BF02407707

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