کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10638482 | 995424 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectroscopic and structural properties of YbF3-doped fluorophosphate glasses
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Compositional influences on the spectroscopic properties of Yb3+ and the structural variations with the introduction of YbF3 were studied in fluorophosphate glasses. Emission cross-section (Ïemi) and gain coefficient (Ïemi Ã Ïf) were calculated which exhibit maximum at RF2 = 33 mol%. YbF3 has an important effect on the glass forming ability of fluorophosphate glasses when RF2 is over 36 mol%. The study of Raman spectra showed big differences on the glass structure between non-Yb3+ and Yb3+-doped glasses. The main building units in Yb3+-doped samples are metaphosphate groups, pyrophosphate groups (P2(O,F)7, PO3F), Al[F6] + Al[O,F]6 and F3AlOAlF3 while those of the non-Yb3+-doped glasses are monophosphate group P(O,F)4, little pyrophosphate group, Al[F4] + Al[F6] + Al[O,F]4 + Al[O,F]6 and F3AlOAlF3, which means Yb3+ ions contribute to a better glass polymerization and network uniformity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 91, Issue 1, 15 May 2005, Pages 166-171
Journal: Materials Chemistry and Physics - Volume 91, Issue 1, 15 May 2005, Pages 166-171
نویسندگان
Liyan Zhang, Lei Wen, Junjie Zhang, Lili Hu,