کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402955 | 1392747 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of a GdCaAl3O7 matrix by the non-hydrolytic sol-gel route
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Due to their stable physical and chemical properties, inorganic matrices have been widely employed as hosts for lasers and phosphors. We have prepared a GdCaAl3O7 matrix by the non-hydrolytic sol-gel route and have investigated the influence of heating treatment on sample structure. Europium III chloride was added as a structural probe, and the structure was analyzed by thermal analyses (TG/DTA/DSC), X-ray diffraction (XRD), and photoluminescence (PL). The XRD analysis revealed that initial crystallization took place at 400 °C. The peaks corresponding to the GdCaAl3O7 and GdAlO3 phases were observed at 800 and 1000 °C. PL data revealed the characteristic transition bands arising from the 5D0â5FJ (J=0, 1, 2, 3, and 4) manifolds under maximum excitation at 275, 391 and 463 nm for all the samples. All the analyses gave evidence that this methodology leads to the formation of a GdCaAl3O7 phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 129, Issue 10, October 2009, Pages 1120-1124
Journal: Journal of Luminescence - Volume 129, Issue 10, October 2009, Pages 1120-1124
نویسندگان
Marcela G. Matos, Paula F.S. Pereira, Paulo S. Calefi, Katia J. Ciuffi, Eduardo J. Nassar,