کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1814860 | 1025656 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Emission analysis of Dy3+ and Pr3+:Bi2O3-ZnF2-B2O3-Li2O-Na2O glasses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Emission analysis of Dy3+ and Pr3+:Bi2O3-ZnF2-B2O3-Li2O-Na2O glasses Emission analysis of Dy3+ and Pr3+:Bi2O3-ZnF2-B2O3-Li2O-Na2O glasses](/preview/png/1814860.png)
چکیده انگلیسی
In this paper, we present the spectral results of Dy3+ and Pr3+ (1.0Â mol%) ions doped Bi2O3-ZnF2-B2O3-Li2O-Na2O glasses. Measurements of X-ray diffraction (XRD), differential scanning calorimetry (DSC) profiles of these rare-earth ions doped glasses have been carried out. From the DSC thermograms, glass transition (Tg), crystallization (Tc) and melting (Tm) temperatures have been evaluated. The direct and indirect optical band gaps have been calculated based on the glasses UV absorption spectra. The emission spectrum of Dy3+:glass has shown two emission transitions 4F7/2â6H15/2 (482Â nm) and 4F7/2â6H13/2 (576Â nm) with an excitation at 390Â nm wavelength and Pr3+:glass has shown a strong emission transition 1D2â3H4 (610Â nm) with an excitation at 445Â nm. Upon exposure to UV radiation, Dy3+ and Pr3+ glasses have shown bright yellow and reddish colors, respectively, from their surfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 403, Issue 1, 1 January 2008, Pages 81-86
Journal: Physica B: Condensed Matter - Volume 403, Issue 1, 1 January 2008, Pages 81-86
نویسندگان
G. Lakshminarayana, R. Vidya Sagar, S. Buddhudu,