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 language | English |
|---|---|
| Pages (from-to) | 45-62 |
| Number of pages | 18 |
| Journal | Hyperfine Interactions |
| Volume | 3 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1977 |
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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 journal › Article
}
TY - JOUR
T1 - The lattice location and hyperfine field of implanted Yb in Fe as a function of annealing temperature
AU - Alexander, R. B.
AU - Ansaldo, E. J.
AU - Deutch, B. I.
AU - Gellert, J.
AU - Feldman, Leonard C
PY - 1977/1
Y1 - 1977/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=34250294950&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34250294950&partnerID=8YFLogxK
U2 - 10.1007/BF01021537
DO - 10.1007/BF01021537
M3 - Article
AN - SCOPUS:34250294950
VL - 3
SP - 45
EP - 62
JO - Hyperfine Interaction
JF - Hyperfine Interaction
SN - 0304-3843
IS - 1
ER -