Mossbauer isomer-shifts and quadrupole splittings in the amorphous iron-boron system

W. Hoving, F. van der Woude, K. H J Buschow, I. Vincze

Research output: Contribution to journalArticle

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Abstract

The isomer shifts and quadrupoole splittings of amorphous FexB1-x alloys (10 a/o {less-than or approximate} × {less-than or approximate} 90 a/o) were studied by 57Fe Mössbauer spectroscopy. The isomer shift vs. composition can be described by the {up triangle, open}φ*- and {up triangle, open}nWS-terms of Miedema's cellular model to predict the heat of formation of binary alloys and an additional volume mismatch term. This term is necessary for boron-rich alloys ( x {less-than or approximate} 50 a/o). We conclude that these samples have a strained atomic structure. The values of the quadrupole splittings at the boron-rich side increase strongly, indicating that the Fe-atoms are squeezed into asymmetric atomic surroundings. Implanted iron into crystalline boron has a comparable isomer shift and quadrupole splitting as the boron-rich alloys.

Original languageEnglish
Pages (from-to)421-426
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume61-62
Issue numberPART 1
DOIs
Publication statusPublished - 1984

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Boron
boron alloys
Isomers
boron
isomers
Iron
quadrupoles
iron
triangles
shift
heat of formation
binary alloys
atomic structure
Binary alloys
Spectroscopy
Crystalline materials
Atoms
spectroscopy
atoms
Chemical analysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Engineering(all)

Cite this

Mossbauer isomer-shifts and quadrupole splittings in the amorphous iron-boron system. / Hoving, W.; van der Woude, F.; Buschow, K. H J; Vincze, I.

In: Journal of Non-Crystalline Solids, Vol. 61-62, No. PART 1, 1984, p. 421-426.

Research output: Contribution to journalArticle

Hoving, W. ; van der Woude, F. ; Buschow, K. H J ; Vincze, I. / Mossbauer isomer-shifts and quadrupole splittings in the amorphous iron-boron system. In: Journal of Non-Crystalline Solids. 1984 ; Vol. 61-62, No. PART 1. pp. 421-426.
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