Abstract
We report on the lattice location of Er in SrTiO 3 single crystals using the emission channeling technique. The angular distribution of conversion electrons emitted from 167 m Er ( T 1/2=2.27 s) was monitored with a position-sensitive detector following the room-temperature 60 keV implantation of the precursor isotope 167 Tm ( T 1/2=9.25 d) to a dose of 2×10 12 at./cm 2. 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 SrTiO 3 implanted to doses of 5×10 14 and 5×10 15 Er/cm 2. We further comment on preliminary photoluminescence results from these samples.
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