Abstract
Conventional Mössbauer studies allow the identification of phases formed in the process of annealing the amorphous precursor and the evaluation of their relative content. However they not provide information regarding the anisotropy fields or magnetostriction. The unconventional rf-Mössbauer technique which employs the rf-collapse and sideband effects is discussed in detail. This method permits us to distinguish the magnetically soft nanocrystalline α-Fe phase from the magnetically harder microcrystalline α-Fe. Qualitative information concerning the distribution of anisotropy fields in the nanocrystalline grains can be inferred from the dependence of the rf-collapsed spectra on the rf-field intensity. The rf-sidebands effect, directly related to magnetostriction, reveals strong reduction of magnetostriction due to the formation of the nanocrystalline phase. The principles of the rf-Mössbauer technique and examples of its application will be discussed for FeZrBCu, Fe-M-B(Cu) (M: Ti, Ta, Nb, Mo) and FeNiZrB nanocrystalline alloys.
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Kopcewicz, M. (2005). Radio-Frequency MÖssbauer Spectroscopy in the Investigation of Nanocrystalline Alloys. In: Idzikowski, B., Švec, P., Miglierini, M. (eds) Properties and Applications of Nanocrystalline Alloys from Amorphous Precursors. NATO Science Series, vol 184. Springer, Dordrecht. https://doi.org/10.1007/1-4020-2965-9_36
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DOI: https://doi.org/10.1007/1-4020-2965-9_36
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-2963-9
Online ISBN: 978-1-4020-2965-3
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