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Amorphous Fe–Mg alloy thin films: magnetic properties and atomic vibrational dynamics

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Abstract

Amorphous (a-) Fe x Mg1−x alloys are interesting materials for the investigation of non-Debye-like low-energy vibrational excitations. We have prepared a-Fe x Mg1−x alloy thin films (0.3 ≤ × ≤0.7) by vapour quenching. The amorphous state was confirmed by conversion electron Mössbauer spectroscopy between 4.2–300 K, and the x- and temperature-dependence of the isomer shift and hyperfine magnetic field was measured. For x= 0.6 and 0.7, magnetic ordering occurs below ~150 K. The atomic vibrational density of states, g(E), was determined by nuclear resonant inelastic scattering, providing clear evidence for the non-Debye-like low-energy vibrational excitations.

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Authors and Affiliations

  1. Laboratory of Applied Physics, University of Duisburg-Essen, 47048, Duisburg, Germany

    B. Sahoo, W. Keune & E. Schuster

  2. Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA

    W. Sturhahn, T. S. Toellner & E. E. Alp

Authors
  1. B. Sahoo
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  2. W. Keune
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  3. E. Schuster
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  4. W. Sturhahn
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  5. T. S. Toellner
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  6. E. E. Alp
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Correspondence to B. Sahoo.

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Sahoo, B., Keune, W., Schuster, E. et al. Amorphous Fe–Mg alloy thin films: magnetic properties and atomic vibrational dynamics. Hyperfine Interact 168, 1185–1190 (2006). https://doi.org/10.1007/s10751-006-9421-3

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