کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1484269 991626 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Packing as a probe of structure in alkaline earth glass systems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Packing as a probe of structure in alkaline earth glass systems
چکیده انگلیسی

Packing is an intrinsic property of glass, defined as the ratio of ionic volume to molar volume, and is a useful parameter for analyzing structural changes with composition. Alkali based glasses show two trends in packing, one dominated by the oxygen covalent network for the small ions, Li and Na, and one ionically dominated by the metal cations for the large, K, Rb and Cs cases [S. Giri, C. Gaebler, J. Helmus, M. Affatigato, S.A. Feller, J. Non-Cryst. Solids 347 (2004) 87]. We have found that alkaline earth glasses do not display these behaviors, and in this paper we determined the packing fractions of these glasses and compared them with the alkali case. Further, we considered the structural implications of the packing trends.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 354, Issue 29, 1 July 2008, Pages 3491–3502
نویسندگان
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