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

16 Citations (Scopus)

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 - Jan 1984

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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