کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1483326 | 1510534 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The charge transfer and ion formation in liquid Li-Tl alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The 7Li NMR Knight shift, K, and the spin-lattice relaxation time, T1, were measured for liquid Li-Tl alloys. The K decreases rapidly with the addition of Tl up to 20Â at.% Tl. In the concentration from 20 to 50Â at.% Tl, the K decreases only slightly and the K of 50Â at.% Tl is 60% of K for the pure liquid Li. Such a decrease of K is considered as an indication for the strong charge transfer from Li to Tl. These tendencies are similar to those from previous studies for liquid Li-Ga and Li-In alloys. However, beyond 50Â at.% Tl, the K increases and reaches to an almost constant value (70% of K for the pure liquid Li). Such a back donation of charge is absent for liquid Li-Ga and Li-In alloys. It is considered that the tendency of the formation of ionic structural unit for liquid Li-Tl alloys is slightly weaker compared with the cases of liquid Li-Ga and Li-In alloys. The T1 is also discussed with the relation to the Knight shift and the electronic properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 353, Issues 32â40, 15 October 2007, Pages 3211-3215
Journal: Journal of Non-Crystalline Solids - Volume 353, Issues 32â40, 15 October 2007, Pages 3211-3215
نویسندگان
Yuta Shimizu, Toshio Itami,