Structural and Mössbauer studies of Fe0.9-xCoxZr0.1 alloys

Q. I. Mohaidat, I. A. Al-Omari, S. H. Mahmood

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this paper, we present the results of the structural and magnetic properties of Fe0.9-xCoxZr0.1 Alloys. X-ray diffraction indicates that this system crystallizes in the cubic BCC structure as a dominant phase and some minor phases. The cubic phase is associated with α-(Fe-Co) while the minor phases are associated with Fe-Zr intermetallic phase. Room temperature Mössbauer spectra of the alloy system indicate that iron is present in two magnetic sites and one minor non-magnetic site. One of the two magnetic sites is attributed to the α-(Fe-Co) phase in which Co is dissolved, and the other to Fe-Zr intermetallic phase. The minor non-magnetic site is attributed to the γ-Fe phase. The magnetic hyperfine field corresponding to the Fe-Co magnetic phase was found to increase with increasing cobalt concentration, which is due to the increase in the spin density at the Fe nucleus. A small decrease in the hyperfine field is observed for the Fe-Zr phase which can be due to the change in the chemical environment around the Fe atoms. The average isomer shift for this system is negative indicating an increase in the s-electron density at the Fe nucleus.

Original languageEnglish
Pages (from-to)149-153
Number of pages5
JournalPhysica B: Physics of Condensed Matter
Volume321
Issue number1-4
DOIs
Publication statusPublished - Aug 2002

Keywords

  • Hyperfine field
  • Isomer shift
  • Magnetic properties
  • Mössbauer spectroscopy
  • Structural properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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