کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1262208 971852 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and spectral properties of Nd-doped glass-ceramics in SiO2-CaO-MgO system prepared by sol-gel method
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis and spectral properties of Nd-doped glass-ceramics in SiO2-CaO-MgO system prepared by sol-gel method
چکیده انگلیسی

SiO2-CaO-MgO glass and glass-ceramic powder doped with Nd3+ were synthesized with sol-gel method. Tetraethylorthosilicate (TEOS), Ca(NO3)2·4H2O, Mg(NO3)2·6H2O, Nd(NO3)3·6H2O, ethanol, distilled water, and HNO3 were used as starting materials. The synthesized powder's properties were examined with simultaneous thermal analysis (STA), X-ray diffraction (XRD), photoluminescence (PL) and scanning electron microscopy (SEM) analysis. The STA curves showed that the softening point and crystallization temperatures were shifted to higher temperatures with increasing dopant content. Regarding XRD patterns of glass samples, Nd was found to act as an intermediate oxide in glass matrix. The XRD patterns of glass-ceramic samples indicated that bredigite and akermanite crystallized in the glass matrix after heat treating at 900 °C. The fluorescence spectra showed that glass-ceramics emitted much stronger irradiation than glasses with the same dopant content. The SEM images illustrated uniform and homogeneous distribution of applied oxides in glass and glass-ceramic compositions.

Graphical AbstractXRD patterns of glass-ceramic samples with different amounts of Nd3+ dopant after heat treatment at 900 °C for 30 minFigure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 31, Issue 6, June 2013, Pages 595–599
نویسندگان
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