Erbium implantation in strontium titanate

• Tipo: Artigo em Revista Científica Internacional
• Data: 2002

Autores

araujo, jp (Autor) FCUP; wahl, u (Autor) Outra; alves, e (Autor) Outra; correia, jg (Autor) Outra; monteiro, t (Autor) Outra; soares, j (Autor) Outra; boemare, c (Autor) Outra

Revista

Título: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

Vol. 191

Páginas: 317-322

ISSN: 0168-583X

Editora: Elsevier

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 5 Citações

Outras Informações

ID Authenticus: P-000-PJS

DOI: 10.1016/s0168-583x(02)00583-9

Abstract (EN): 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 Er-167m (T-1/2 = 2.27 s) was monitored with a position-sensitive detector following the room-temperature 60 keV implantation of the precursor isotope Tm-167 (T-1/2 = 9.25 d) to a dose of 2 x 10(12) at./cm(2). The results for the sample annealed in vacuum at 610 degreesC 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 x 10(14) and 5 x 10(15) Er/cm(2). We further comment on preliminary photoluminescence results from these samples.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6