Mössbauer Effect in Iron‐Aluminium Alloys (I)

L. Cser, J. Ostauevich, L. Pál

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The ordering process and magnetic structure of iron‐aluminium alloys near the composition Fe3Al are studied experimentally by the Mössbauer technique. It is found that the isomer shift shows a pronounced hysteresis in the temperature range 750 to 850 °C which indicates the first order character of the B2‐type ordering. The simultaneous appearance of the central (paramagnetic) and hyperfine lines in the temperature interval 640 to 500 °C shows that the Mössbauer spectrum is a superimposition of two spectra. These originate from Fe57 nuclei on two different sublattices; one of them is paramagnetic (A sublattice) and the other is magnetically ordered (D sublattice). The hyperfine field and the isomer shift of the hyperfine lines show a pronounced discontinuity at the temperature of the DO3‐type ordering. At this temperature it is found the intensity ratio of the outer to adjacent peak also suffers a sudden change. This indicates a ferromagnetic to antiferromagnetic transformation which is not contrary to existing theoretical ideas but as yet lacks direct experimental confirmation.

Original languageEnglish
Pages (from-to)581-589
Number of pages9
JournalPhysica Status Solidi (B): Basic Research
Volume20
Issue number2
DOIs
Publication statusPublished - 1967

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sublattices
Isomers
isomers
Temperature
temperature
Magnetic structure
shift
Hysteresis
discontinuity
hysteresis
intervals
nuclei
Chemical analysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Mössbauer Effect in Iron‐Aluminium Alloys (I). / Cser, L.; Ostauevich, J.; Pál, L.

In: Physica Status Solidi (B): Basic Research, Vol. 20, No. 2, 1967, p. 581-589.

Research output: Contribution to journalArticle

Cser, L. ; Ostauevich, J. ; Pál, L. / Mössbauer Effect in Iron‐Aluminium Alloys (I). In: Physica Status Solidi (B): Basic Research. 1967 ; Vol. 20, No. 2. pp. 581-589.
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