کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9778137 1510572 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
X-ray absorption near edge structure (XANES) investigation of MnOy-doped sodium metaphosphate glasses and crystalline reference materials
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
X-ray absorption near edge structure (XANES) investigation of MnOy-doped sodium metaphosphate glasses and crystalline reference materials
چکیده انگلیسی
The comparison of X-ray absorption near edge structure (XANES) spectra of MnOy-doped sodium metaphosphate glasses with the spectra of crystalline manganese oxides clearly indicates that the majority of the manganese ions are Mn2+, although the intensive violet color of these glasses is typical for manganese(III) containing phosphates. This finding is confirmed by permanganometric titration showing a maximum Mn3+-content of about 3 mol%. A decrease in the white line intensity with increasing manganese concentration is observed for a series of three glasses which is related to an increasing percentage of 4-fold oxygen coordinated manganese ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 12–13, 1 May 2005, Pages 1072-1076
نویسندگان
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