کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5497320 | 1530939 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Pressure and Temperature on the Local Structure and Lattice Dynamics of Copper(II) Oxide
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Pressure and Temperature on the Local Structure and Lattice Dynamics of Copper(II) Oxide Effect of Pressure and Temperature on the Local Structure and Lattice Dynamics of Copper(II) Oxide](/preview/png/5497320.png)
چکیده انگلیسی
Microcrystalline and nanocrystalline (6 nm) CuO were studied in situ by the Cu K-edge X-ray absorption spectroscopy as a function of pressure (0-20 GPa) and temperature (10-300 K). Pressure dependence of X-ray absorption near edge structure (XANES) was interpreted within the full-multiple-scattering formalism based on the relaxed atomic structure determined by ab initio linear combination of atomic orbital (LCAO) calculations. Temperature dependence of the mean-square relative displacement (MSRD) for the four shortest Cu-O distances was obtained from the analysis of extended X-ray absorption fine structure (EXAFS) and described by the correlated Einstein model with the characteristic temperature θE =589 K. It was found that the thermal motion of copper and four oxygen atoms forming square-planar coordination is strongly correlated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Procedia - Volume 85, 2016, Pages 27-35
Journal: Physics Procedia - Volume 85, 2016, Pages 27-35
نویسندگان
A. Kuzmin, A. Anspoks, A. Kalinko, A. Rumjancevs, J. Timoshenko, L. Nataf, F. Baudelet, T. Irifune,