The lattice location and hyperfine field of implanted Yb in Fe as a function of annealing temperature

R. B. Alexander, E. J. Ansaldo, B. I. Deutch, J. Gellert, Leonard C Feldman

Research output: Contribution to journalArticle

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Abstract

A combined study has been made of the lattice location and hyperfine field of Yb implanted into Fe single crystals. The location has been determined by ion channeling and back-scattering, the hyperfine field by perturbed angular correlation (PAC) measurements on169Yb (decaying to excited states in169Tm). The channeling experiments indicate that initially about 60% of the Yb atoms occupy substitutional sites in the Fe lattice, while the remaining atoms are not in any specific crystallographic site. On annealing, Yb migrates from substitutional to non-substitutional sites. No Yb atoms remain substitutional after a 600°C anneal. By making PAC measurements at two temperatures for two γ-γ cascades in169Tm, it is found that the PAC pattern can be described using a combined static and time-dependent magnetic interaction. The PAC results show that the average hyperfine field and relaxation parameter decrease on annealing, and that the field disappears after a 600°C anneal. The correlation between the location and the hyperfine field is discussed. A comparison of the results with previous Mössbauer results for151Gd implanted in Fe, together with relaxation parameter measurements on a169Yb2O3 source, suggests that the non-substitutional Yb is internally oxidized in the Fe host.

Original languageEnglish
Pages (from-to)45-62
Number of pages18
JournalHyperfine Interactions
Volume3
Issue number1
DOIs
Publication statusPublished - Jan 1977

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angular correlation
Annealing
Atoms
annealing
atoms
Excited states
Temperature
temperature
Single crystals
Scattering
Ions
cascades
single crystals
Experiments
scattering
excitation
ions
interactions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Electronic, Optical and Magnetic Materials

Cite this

The lattice location and hyperfine field of implanted Yb in Fe as a function of annealing temperature. / Alexander, R. B.; Ansaldo, E. J.; Deutch, B. I.; Gellert, J.; Feldman, Leonard C.

In: Hyperfine Interactions, Vol. 3, No. 1, 01.1977, p. 45-62.

Research output: Contribution to journalArticle

Alexander, R. B. ; Ansaldo, E. J. ; Deutch, B. I. ; Gellert, J. ; Feldman, Leonard C. / The lattice location and hyperfine field of implanted Yb in Fe as a function of annealing temperature. In: Hyperfine Interactions. 1977 ; Vol. 3, No. 1. pp. 45-62.
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