Influence of vacancies on the static and dynamic properties of monoatomic liquids
Само за регистроване кориснике
2003
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The structure of monoatomic liquids is assumed to consist of the. normal substructure and defect substructure. The oscillatory motion of atoms in the normal substructure with the nearest-neighbour. distance R-ns is characterized by the period of time t(osc) = 6.07 x 10(-13) s in l-Pb and t(osc) = 7.88 x 10(-13)s in l-Ge. In the defect substructure the appearance of vacancy stipulates the shift of its nearest neighbours (Z(1)) towards the next nearest neighbours (Z(2)) for a distance DeltaR which is estimated as DeltaR = 0.67Angstrom, in l-Pb and 0.99Angstrom in l-Ge. The I concentration of vacancies in both liquids is determined from the experimental static structure factor S(q). The sum of the first and second vacancy neighbours Z = Z(1) + Z(2) is found to be Z = 24 in l-Pb and Z = 18 in l-Ge. The jump of vacancy for a distance I= R-ns + 2DeltaR occurs during the time interval which is at the melting point t(D) = 1.99,X 10(-11)s in l-Pb and t(D) = 1.39 x 10(-11) s in l-Ge. The displac...ement of vacancy nearest neighbours for a distance DeltaR occurs during the time t(r) = 2.17 x 10(-12)s in l-Pb, and t(r) = 2.87 x 10(-12) s in l-Ge. The time interval 10(-12)s was erroneously attributed to the self-diffusive motion of liquid particles. Since the energy gain of this process is DeltaE = 0, the relaxation entropy should be DeltaS(r) = DeltaE/T = 0. The results of this work, and particularly the activation entropy obtained as DeltaS(SD) = -4.20 k in l-Pb and DeltaS(SD) -3.66 k in,l-Ge support the self-diffusion in these liquids as an activation process. (C) 2003 Elsevier Science B.V. All rights reserved.
Кључне речи:
vacancies / liquid structure / self-diffusionИзвор:
Physica B: Condensed Matter, 2003, 334, 3-4, 274-286Финансирање / пројекти:
- Ministry of Science, Technology and Development of the Republic of Serbia [Project No. 1996]
DOI: 10.1016/S0921-4526(03)00077-2
ISSN: 0921-4526; 1873-2135
WoS: 000183689500008
Scopus: 2-s2.0-0037904382
Институција/група
VinčaTY - JOUR AU - Stojić, M. AU - Babić-Stojić, Branka S. AU - Milivojević, Dušan PY - 2003 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2643 AB - The structure of monoatomic liquids is assumed to consist of the. normal substructure and defect substructure. The oscillatory motion of atoms in the normal substructure with the nearest-neighbour. distance R-ns is characterized by the period of time t(osc) = 6.07 x 10(-13) s in l-Pb and t(osc) = 7.88 x 10(-13)s in l-Ge. In the defect substructure the appearance of vacancy stipulates the shift of its nearest neighbours (Z(1)) towards the next nearest neighbours (Z(2)) for a distance DeltaR which is estimated as DeltaR = 0.67Angstrom, in l-Pb and 0.99Angstrom in l-Ge. The I concentration of vacancies in both liquids is determined from the experimental static structure factor S(q). The sum of the first and second vacancy neighbours Z = Z(1) + Z(2) is found to be Z = 24 in l-Pb and Z = 18 in l-Ge. The jump of vacancy for a distance I= R-ns + 2DeltaR occurs during the time interval which is at the melting point t(D) = 1.99,X 10(-11)s in l-Pb and t(D) = 1.39 x 10(-11) s in l-Ge. The displacement of vacancy nearest neighbours for a distance DeltaR occurs during the time t(r) = 2.17 x 10(-12)s in l-Pb, and t(r) = 2.87 x 10(-12) s in l-Ge. The time interval 10(-12)s was erroneously attributed to the self-diffusive motion of liquid particles. Since the energy gain of this process is DeltaE = 0, the relaxation entropy should be DeltaS(r) = DeltaE/T = 0. The results of this work, and particularly the activation entropy obtained as DeltaS(SD) = -4.20 k in l-Pb and DeltaS(SD) -3.66 k in,l-Ge support the self-diffusion in these liquids as an activation process. (C) 2003 Elsevier Science B.V. All rights reserved. T2 - Physica B: Condensed Matter T1 - Influence of vacancies on the static and dynamic properties of monoatomic liquids VL - 334 IS - 3-4 SP - 274 EP - 286 DO - 10.1016/S0921-4526(03)00077-2 ER -
@article{ author = "Stojić, M. and Babić-Stojić, Branka S. and Milivojević, Dušan", year = "2003", abstract = "The structure of monoatomic liquids is assumed to consist of the. normal substructure and defect substructure. The oscillatory motion of atoms in the normal substructure with the nearest-neighbour. distance R-ns is characterized by the period of time t(osc) = 6.07 x 10(-13) s in l-Pb and t(osc) = 7.88 x 10(-13)s in l-Ge. In the defect substructure the appearance of vacancy stipulates the shift of its nearest neighbours (Z(1)) towards the next nearest neighbours (Z(2)) for a distance DeltaR which is estimated as DeltaR = 0.67Angstrom, in l-Pb and 0.99Angstrom in l-Ge. The I concentration of vacancies in both liquids is determined from the experimental static structure factor S(q). The sum of the first and second vacancy neighbours Z = Z(1) + Z(2) is found to be Z = 24 in l-Pb and Z = 18 in l-Ge. The jump of vacancy for a distance I= R-ns + 2DeltaR occurs during the time interval which is at the melting point t(D) = 1.99,X 10(-11)s in l-Pb and t(D) = 1.39 x 10(-11) s in l-Ge. The displacement of vacancy nearest neighbours for a distance DeltaR occurs during the time t(r) = 2.17 x 10(-12)s in l-Pb, and t(r) = 2.87 x 10(-12) s in l-Ge. The time interval 10(-12)s was erroneously attributed to the self-diffusive motion of liquid particles. Since the energy gain of this process is DeltaE = 0, the relaxation entropy should be DeltaS(r) = DeltaE/T = 0. The results of this work, and particularly the activation entropy obtained as DeltaS(SD) = -4.20 k in l-Pb and DeltaS(SD) -3.66 k in,l-Ge support the self-diffusion in these liquids as an activation process. (C) 2003 Elsevier Science B.V. All rights reserved.", journal = "Physica B: Condensed Matter", title = "Influence of vacancies on the static and dynamic properties of monoatomic liquids", volume = "334", number = "3-4", pages = "274-286", doi = "10.1016/S0921-4526(03)00077-2" }
Stojić, M., Babić-Stojić, B. S.,& Milivojević, D.. (2003). Influence of vacancies on the static and dynamic properties of monoatomic liquids. in Physica B: Condensed Matter, 334(3-4), 274-286. https://doi.org/10.1016/S0921-4526(03)00077-2
Stojić M, Babić-Stojić BS, Milivojević D. Influence of vacancies on the static and dynamic properties of monoatomic liquids. in Physica B: Condensed Matter. 2003;334(3-4):274-286. doi:10.1016/S0921-4526(03)00077-2 .
Stojić, M., Babić-Stojić, Branka S., Milivojević, Dušan, "Influence of vacancies on the static and dynamic properties of monoatomic liquids" in Physica B: Condensed Matter, 334, no. 3-4 (2003):274-286, https://doi.org/10.1016/S0921-4526(03)00077-2 . .