INVESTIGATION OF THE ANHARMONIC CORRELATION EFFECTS BY DEBYE MODEL IN X-RAY ABSORPTION FINE STRUCTURE SPECTRA–APPLICATION TO A TWO-COMPONENT ALLOY
The displacement correlation function in extended X-ray absorption fine structure spectra has been determined based on the Debye-Waller factor. The anharmonic correlated Debye model and the harmonic Debye model have been used to build analytical expressions of mean square displacement, mean square r...
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| Format: | Article |
| Language: | English |
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Dalat University
2020-09-01
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| Series: | Tạp chí Khoa học Đại học Đà Lạt |
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| Online Access: | http://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/732 |
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| author | Nguyễn Bá Đức Vũ Quang Thọ Trịnh Phi Hiệp Nguyễn Văn Nghĩa Phạm Thị Minh Hạnh Vũ Thị Thanh Hà |
| author_facet | Nguyễn Bá Đức Vũ Quang Thọ Trịnh Phi Hiệp Nguyễn Văn Nghĩa Phạm Thị Minh Hạnh Vũ Thị Thanh Hà |
| author_sort | Nguyễn Bá Đức |
| collection | DOAJ |
| description | The displacement correlation function in extended X-ray absorption fine structure spectra has been determined based on the Debye-Waller factor. The anharmonic correlated Debye model and the harmonic Debye model have been used to build analytical expressions of mean square displacement, mean square relative displacement, and correlation function dependence on temperature and doping ratio. The thermodynamic quantities have been calculated based on the effective anharmonic potential, including the interaction of absorbing and scattering atoms with their nearest neighbors in an atom cluster. The analytical expressions have been applied to face-centered cubic crystals and their alloys. Numerical results for crystalline copper (Cu) and copper-silver alloys (CuAg) of 72% and 50% ratios agree well with experimental values and other studies. The study has contributed to our knowledge of the thermodynamic properties of 50:50 CuAg doped alloy at low temperatures. |
| format | Article |
| id | doaj-art-999c8f14b97b441bae1189cf189e08dc |
| institution | Kabale University |
| issn | 0866-787X 0866-787X |
| language | English |
| publishDate | 2020-09-01 |
| publisher | Dalat University |
| record_format | Article |
| series | Tạp chí Khoa học Đại học Đà Lạt |
| spelling | doaj-art-999c8f14b97b441bae1189cf189e08dc2025-02-02T02:58:38ZengDalat UniversityTạp chí Khoa học Đại học Đà Lạt0866-787X0866-787X2020-09-01103778910.37569/DalatUniversity.10.3.732(2020)336INVESTIGATION OF THE ANHARMONIC CORRELATION EFFECTS BY DEBYE MODEL IN X-RAY ABSORPTION FINE STRUCTURE SPECTRA–APPLICATION TO A TWO-COMPONENT ALLOYNguyễn Bá Đức0Vũ Quang Thọ1Trịnh Phi Hiệp2Nguyễn Văn Nghĩa3Phạm Thị Minh Hạnh4Vũ Thị Thanh Hà5Trường Đại học Tân TràoTrường Đại học Tân TràoTrường Đại học Tân TràoTrường Đại học Thủy LợiTrường Đại học Sư phạm Hà Nội 2Nhà Xuất bản Giáo dục, Hà NộiThe displacement correlation function in extended X-ray absorption fine structure spectra has been determined based on the Debye-Waller factor. The anharmonic correlated Debye model and the harmonic Debye model have been used to build analytical expressions of mean square displacement, mean square relative displacement, and correlation function dependence on temperature and doping ratio. The thermodynamic quantities have been calculated based on the effective anharmonic potential, including the interaction of absorbing and scattering atoms with their nearest neighbors in an atom cluster. The analytical expressions have been applied to face-centered cubic crystals and their alloys. Numerical results for crystalline copper (Cu) and copper-silver alloys (CuAg) of 72% and 50% ratios agree well with experimental values and other studies. The study has contributed to our knowledge of the thermodynamic properties of 50:50 CuAg doped alloy at low temperatures.http://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/732hàm tương quanhệ số debye-wallerhợp kim liên kim loạimô hình debyethế hiệu dụng phi điều hòa. |
| spellingShingle | Nguyễn Bá Đức Vũ Quang Thọ Trịnh Phi Hiệp Nguyễn Văn Nghĩa Phạm Thị Minh Hạnh Vũ Thị Thanh Hà INVESTIGATION OF THE ANHARMONIC CORRELATION EFFECTS BY DEBYE MODEL IN X-RAY ABSORPTION FINE STRUCTURE SPECTRA–APPLICATION TO A TWO-COMPONENT ALLOY Tạp chí Khoa học Đại học Đà Lạt hàm tương quan hệ số debye-waller hợp kim liên kim loại mô hình debye thế hiệu dụng phi điều hòa. |
| title | INVESTIGATION OF THE ANHARMONIC CORRELATION EFFECTS BY DEBYE MODEL IN X-RAY ABSORPTION FINE STRUCTURE SPECTRA–APPLICATION TO A TWO-COMPONENT ALLOY |
| title_full | INVESTIGATION OF THE ANHARMONIC CORRELATION EFFECTS BY DEBYE MODEL IN X-RAY ABSORPTION FINE STRUCTURE SPECTRA–APPLICATION TO A TWO-COMPONENT ALLOY |
| title_fullStr | INVESTIGATION OF THE ANHARMONIC CORRELATION EFFECTS BY DEBYE MODEL IN X-RAY ABSORPTION FINE STRUCTURE SPECTRA–APPLICATION TO A TWO-COMPONENT ALLOY |
| title_full_unstemmed | INVESTIGATION OF THE ANHARMONIC CORRELATION EFFECTS BY DEBYE MODEL IN X-RAY ABSORPTION FINE STRUCTURE SPECTRA–APPLICATION TO A TWO-COMPONENT ALLOY |
| title_short | INVESTIGATION OF THE ANHARMONIC CORRELATION EFFECTS BY DEBYE MODEL IN X-RAY ABSORPTION FINE STRUCTURE SPECTRA–APPLICATION TO A TWO-COMPONENT ALLOY |
| title_sort | investigation of the anharmonic correlation effects by debye model in x ray absorption fine structure spectra application to a two component alloy |
| topic | hàm tương quan hệ số debye-waller hợp kim liên kim loại mô hình debye thế hiệu dụng phi điều hòa. |
| url | http://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/732 |
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