کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7900347 | 1510366 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Short range order of As40-xCuxTe60 glasses
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Short range order of As40-xCuxTe60 (x = 0, 10, 20, 25, 30) glasses was studied by neutron- and X-ray diffraction, combined with extended X-ray absorption fine structure (EXAFS) measurements at the K-edges of all components. Large-scale structural models were generated by fitting the experimental datasets simultaneously in the framework of the reverse Monte Carlo simulation technique. These simulations revealed that As and Te atoms bind to about 3 and 2 As/Te neighbors, respectively, both of which possess Cu neighbors. The CuTe bond length is 2.57 ± 0.02 Ã
while the CuAs distance is as high as 2.86 ± 0.04 Ã
. The results further showed that besides As and Te, Cu atoms also bind to Cu. The total coordination number of Cu is significantly higher than 4 for the compositions x = 25 and 30.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 481, 1 February 2018, Pages 202-207
Journal: Journal of Non-Crystalline Solids - Volume 481, 1 February 2018, Pages 202-207
نویسندگان
P. Jóvári, A. Piarristeguy, J.B. Vaney, I. Kaban, A. Zitolo, B. Beuneu, J. BednarÄik, G. Delaizir, J. Monnier, A.P. Gonçalves, C. Candolfi,