کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10633674 993050 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Site of Er ions in Er-implanted silica containing Si nanoclusters
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Site of Er ions in Er-implanted silica containing Si nanoclusters
چکیده انگلیسی
In this work the site of Er ions in a silica matrix containing Si nanoclusters (nc) is investigated. The Er ions are introduced into a silica matrix containing Si nanoclusters by ion implantation. The X-ray absorption spectroscopy (EXAFS), performed at Er LIII-edge shows that the Er site in the matrix strongly depends on the preparation conditions; the effect of the implantation dose on the local structure around Er is addressed. The data demonstrate that the Er atoms are surrounded in the first shell by O atoms. Moreover, an increasing in the Er implantation dose implies an increase of the number of O atoms in the first shell and of their distance to the Er central atom, leading to the formation of a Er site more similar to that of bulk Er2O3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 27, Issue 5, February 2005, Pages 900-903
نویسندگان
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