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Title: Erbium implantation in strontium titanate
Author: Araújo, J.P.
Wahl, U.
Alves, E.
Correia, J.G.
Monteiro, T.
Soares, J.
Boemare, C.
Keywords: Emission channeling
Ion implantation
Radioactive isotopes
Issue Date: 2002
Publisher: Elsevier
Abstract: We report on the lattice location of Er in SrTiO3 single crystals using the emission channeling technique. The angular distribution of conversion electrons emitted from 167mEr (T1/2 = 2.27 s) was monitored with a position-sensitive detector following the room-temperature 60 keV implantation of the precursor isotope 167Tm (T1/2 = 9.25 d) to a dose of 2 × 1012 at./cm2. The results for the sample annealed in vacuum at 610 °C for 15 min provide direct evidence that Er occupies both Sr and Ti substitutional lattice sites. In addition, thermal recovery of lattice damage was also studied with Rutherford backscattering/channeling for SrTiO3 implanted to doses of 5 × 1014 and 5 × 1015 Er/cm2. We further comment on preliminary photoluminescence results from these samples
Peer review: yes
DOI: 10.1016/S0168-583X(02)00583-9
ISSN: 0168-583X
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