کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11001699 | 1010686 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
First-principles study of plutonium and cerium solubility in Gd2Sn2O7 pyrochlore
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
The solubility of Pu and Ce in Gd2Sn2O7 pyrochlore has been investigated by the first principles calculation based on the density functional theory plus Hubbard U correction. The capacity of Pu and Ce substitution in Gd2Sn2O7, as well as the structural properties and the electronic distribution of Gd2âyPuySn2O7 (yâ¯=â¯0, 0.5, 1.0, 1.5, 2.0) has been studied. Our energetic analysis suggests that Pu can only perform A-site incorporation in Gd2Sn2O7, and Ce is unable to accomplish substitution in both A and B sites. This result indicates that from the aspect of energy properties, the reliability of Ce surrogate for Pu in the research of stannate pyrochlores requires further investigation. The structural and electronic calculation elucidates that Pu immobilization will weaken the radiation resistance of Gd2Sn2O7 and Pu presents as a reduced charge state in the solid solution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 436, 1 December 2018, Pages 211-216
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 436, 1 December 2018, Pages 211-216
نویسندگان
Y.H. Wang, Y.H. Li, C.G. Liu, X. Liu,