کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803165 | 1516463 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen sites analysed by X-ray synchrotron diffraction in Mg7TiH13-16 made at gigapascal high-pressures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The structure of a new hydrogen rich Mg-based transition metal hydride, i.e. Mg7TiH16, was investigated with high-energy X-ray synchrotron radiation data from the facility SPring-8, Japan. The hydride phase was in advance prepared at 8âGPa and 873âK with a cubic anvil press. The high-energy beam also enabled hydrogen to be observed. With the Rietveld method the best result was obtained when two tetrahedral sites are fully occupied by hydrogen atoms with a minimum H H distance of 1.8âÃ
. A sample that had been stored for a longer time before analysis appeared to have less hydrogen corresponding to the formula unit of Mg7TiH13 and also a smaller unit cell volume.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volumes 404â406, 8 December 2005, Pages 68-72
Journal: Journal of Alloys and Compounds - Volumes 404â406, 8 December 2005, Pages 68-72
نویسندگان
E. Rönnebro, D. Kyoi, A. Kitano, Y. Kitano, T. Sakai,