کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1484930 1510532 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strontium environment transition in tin silicate glasses by neutron and X-ray diffraction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Strontium environment transition in tin silicate glasses by neutron and X-ray diffraction
چکیده انگلیسی
The effect of Sr modifier atoms on the structure of stannosilicate glasses of composition (Sr0)x(SnO)0.5−x(SiO2)0.5, with 0 ⩽ x ⩽ 0.15, has been studied using Mössbauer spectroscopy and neutron and X-ray diffraction. The tin is mostly in the Sn2+ state. The Sr-O bond length undergoes a step decrease from (2.640 ± 0.005) Å to (2.585 ± 0.005) Å as x increases from 0.10 to 0.15, indicating a decrease in co-ordination number from 8 to 7. A Sn-Sn distance of 3.507 ± 0.005 Å is revealed by a first-order difference calculation from the x = 0 sample. This is too short to be consistent with significant edge sharing of [SnO3] trigonal pyramids.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 353, Issues 44–46, 15 November 2007, Pages 4084-4092
نویسندگان
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