Electronic Resource
Springer
Hyperfine interactions
29 (1986), S. 1249-1253
ISSN:
1572-9540
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract YAG and YIG crystals implanted respectively with 100 keV57Fe2+ ions (1 × 1017 ions.cm−2) and 50 keV27Al ions (1.1 × 1017 ions.cm−2) have been studied by conversion electron Mössbauer spectroscopy (CEMS) directly after implantation and after annealings in air at temperatures up to 1100°C. In both as-implanted samples iron is found mainly in three states: Fe2+, Fe3+ and small metallic precipitates. Annealing behaviour is divided into two stages: (i) up to 400°C the iron has become completely oxidized and (ii) between 400 and 850°C the epitaxial regrowth of the implanted layer takes place. During this process a part of iron ions are incorporated into octahedral and tetrahedral sites, thus making a Y3 (Al Fe)5 O12 compound. The remaining iron part precipitates in the form of Fe2O3 particles.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02399461
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