کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1334042 | 979136 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and Eu3+ luminescence in new oxysilicates, ALa3Bi(SiO4)3O and ALa2Bi2(SiO4)3O [ACa, Sr and Ba] with apatite-related structure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی معدنی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
New oxysilicates with the general formula ALa3Bi(SiO4)3O and ALa2Bi2(SiO4)3O [ACa, Sr and Ba] are synthesized and characterized. Powder X-ray diffraction of these silicates show that they are isostructural with BiCa4(VO4)3O which has an apatite-related structure. Eu3+ luminescence in the newly synthesized oxysilicates show broad emission lines due to disorder of cations. The relatively high intense magnetic dipole transition 5D0→7F1 points to a more symmetric environment. The photoluminescence results confirm that the compounds have apatite-related crystal structure.
Photoluminescence emission spectra of Eu3+ in ALa3Bi(SiO4)3O and ALa2Bi2(SiO4)3O [ACa, Sr and Ba]; λexc=395nm.Figure optionsDownload as PowerPoint slide
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 178, Issue 11, November 2005, Pages 3284–3292
Journal: Journal of Solid State Chemistry - Volume 178, Issue 11, November 2005, Pages 3284–3292
نویسندگان
N. Lakshminarasimhan, U.V. Varadaraju,