The extended X-ray absorption fine structure (EXAFS) has been developed into a powerful technique and is widely applied to determine many structural parameters and dynamic properties of materials. The EXAFS technique is now the technique of choice in many materials science investigations, and the EXAFS data analysis is being performed in many laboratories spread around the world. In this work, the anharmonic EXAFS spectra of crystalline nickel (Ni) has been analyzed based on the quantum anharmonic correlated Einstein model. The anharmonic EXAFS oscillation presented in terms of the Debye-Waller factors using the cumulant expansion approach up to the fourth-order. This calculation model has been developed from the high-order anharmonic effective potential that described the contribution of their nearest-neighbor atoms to the pair interaction potential. The analytical expressions of the anharmonic EXAFS cumulants are not only explicit forms but also satisfy all of their fundamental properties in temperature dependence. The analysis of the anharmonic EXAFS spectra was performed by evaluating the contributions of the cumulants to the amplitude reduction and the phase shift of the anharmonic EXAFS oscillation. The numerical results for Ni were in good agreement with those obtained using the other theoretical methods and experiment at various temperatures, which are useful for analyzing the experimental EXAFS data of the metal crystals.
Published in | Advances in Applied Sciences (Volume 5, Issue 3) |
DOI | 10.11648/j.aas.20200503.13 |
Page(s) | 70-74 |
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EXAFS Analysis, Einstein Model, Quantum Statistical Theory, Crystalline Nickel
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APA Style
Tong Sy Tien, Le Viet Hoang, Nguyen Ngoc Thang, Bui Ba Manh, Nguyen Huu Hieu, et al. (2020). Analysis of Anharmonic EXAFS Spectra of Crystalline Nickel Using High-order Debye-Waller Factors. Advances in Applied Sciences, 5(3), 70-74. https://doi.org/10.11648/j.aas.20200503.13
ACS Style
Tong Sy Tien; Le Viet Hoang; Nguyen Ngoc Thang; Bui Ba Manh; Nguyen Huu Hieu, et al. Analysis of Anharmonic EXAFS Spectra of Crystalline Nickel Using High-order Debye-Waller Factors. Adv. Appl. Sci. 2020, 5(3), 70-74. doi: 10.11648/j.aas.20200503.13
AMA Style
Tong Sy Tien, Le Viet Hoang, Nguyen Ngoc Thang, Bui Ba Manh, Nguyen Huu Hieu, et al. Analysis of Anharmonic EXAFS Spectra of Crystalline Nickel Using High-order Debye-Waller Factors. Adv Appl Sci. 2020;5(3):70-74. doi: 10.11648/j.aas.20200503.13
@article{10.11648/j.aas.20200503.13, author = {Tong Sy Tien and Le Viet Hoang and Nguyen Ngoc Thang and Bui Ba Manh and Nguyen Huu Hieu and Nguyen Thi Ngoc Anh and Duong Thanh Cong and Nguyen Hong Nhung and Nguyen Thi Thanh Nhan}, title = {Analysis of Anharmonic EXAFS Spectra of Crystalline Nickel Using High-order Debye-Waller Factors}, journal = {Advances in Applied Sciences}, volume = {5}, number = {3}, pages = {70-74}, doi = {10.11648/j.aas.20200503.13}, url = {https://doi.org/10.11648/j.aas.20200503.13}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aas.20200503.13}, abstract = {The extended X-ray absorption fine structure (EXAFS) has been developed into a powerful technique and is widely applied to determine many structural parameters and dynamic properties of materials. The EXAFS technique is now the technique of choice in many materials science investigations, and the EXAFS data analysis is being performed in many laboratories spread around the world. In this work, the anharmonic EXAFS spectra of crystalline nickel (Ni) has been analyzed based on the quantum anharmonic correlated Einstein model. The anharmonic EXAFS oscillation presented in terms of the Debye-Waller factors using the cumulant expansion approach up to the fourth-order. This calculation model has been developed from the high-order anharmonic effective potential that described the contribution of their nearest-neighbor atoms to the pair interaction potential. The analytical expressions of the anharmonic EXAFS cumulants are not only explicit forms but also satisfy all of their fundamental properties in temperature dependence. The analysis of the anharmonic EXAFS spectra was performed by evaluating the contributions of the cumulants to the amplitude reduction and the phase shift of the anharmonic EXAFS oscillation. The numerical results for Ni were in good agreement with those obtained using the other theoretical methods and experiment at various temperatures, which are useful for analyzing the experimental EXAFS data of the metal crystals.}, year = {2020} }
TY - JOUR T1 - Analysis of Anharmonic EXAFS Spectra of Crystalline Nickel Using High-order Debye-Waller Factors AU - Tong Sy Tien AU - Le Viet Hoang AU - Nguyen Ngoc Thang AU - Bui Ba Manh AU - Nguyen Huu Hieu AU - Nguyen Thi Ngoc Anh AU - Duong Thanh Cong AU - Nguyen Hong Nhung AU - Nguyen Thi Thanh Nhan Y1 - 2020/08/05 PY - 2020 N1 - https://doi.org/10.11648/j.aas.20200503.13 DO - 10.11648/j.aas.20200503.13 T2 - Advances in Applied Sciences JF - Advances in Applied Sciences JO - Advances in Applied Sciences SP - 70 EP - 74 PB - Science Publishing Group SN - 2575-1514 UR - https://doi.org/10.11648/j.aas.20200503.13 AB - The extended X-ray absorption fine structure (EXAFS) has been developed into a powerful technique and is widely applied to determine many structural parameters and dynamic properties of materials. The EXAFS technique is now the technique of choice in many materials science investigations, and the EXAFS data analysis is being performed in many laboratories spread around the world. In this work, the anharmonic EXAFS spectra of crystalline nickel (Ni) has been analyzed based on the quantum anharmonic correlated Einstein model. The anharmonic EXAFS oscillation presented in terms of the Debye-Waller factors using the cumulant expansion approach up to the fourth-order. This calculation model has been developed from the high-order anharmonic effective potential that described the contribution of their nearest-neighbor atoms to the pair interaction potential. The analytical expressions of the anharmonic EXAFS cumulants are not only explicit forms but also satisfy all of their fundamental properties in temperature dependence. The analysis of the anharmonic EXAFS spectra was performed by evaluating the contributions of the cumulants to the amplitude reduction and the phase shift of the anharmonic EXAFS oscillation. The numerical results for Ni were in good agreement with those obtained using the other theoretical methods and experiment at various temperatures, which are useful for analyzing the experimental EXAFS data of the metal crystals. VL - 5 IS - 3 ER -