کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803893 | 1516475 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structure of amorphous TbNi2D2.4 observed by X-ray and neutron diffraction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
X-ray and neutron diffraction measurements have been performed to elucidate the structure for amorphous (a-)TbNi2D2.4 prepared by deuterium absorption of the C15 Laves phase compound TbNi2. The results were compared with those for previously reported a-TbFe2D3.0 which shows the concentration fluctuations. Noticeable differences in the arrangements of metal atoms and the occupation sites of D atoms between the two samples were observed in both X-ray and neutron diffraction data. Namely, in distinction from a-TbFe2D3.0, the atomic arrangement of a-TbNi2D2.4 is relatively homogeneous. Three-dimensional atomic arrangements obtained from the reverse Monte Carlo (RMC) modeling provided us the visual description of the differences in the structures between a-TbNi2D2.4 and a-TbFe2D3.0. It was found that over 40% of the D atoms occupied 2Ni + 2Tb tetrahedral sites in a-TbNi2D2.4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 392, Issues 1â2, 19 April 2005, Pages 6-11
Journal: Journal of Alloys and Compounds - Volume 392, Issues 1â2, 19 April 2005, Pages 6-11
نویسندگان
Keiji Itoh, Tomohiro Sawada, Kiyoshi Aoki, Toshiharu Fukunaga,