First-principles study of the relative stability of various zirconium hydrides using the special quasirandom structures approach
First-principles study of the relative stability of various zirconium hydrides using the special quasirandom structures approach
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使用特殊准随机结构方法对各种氢化锆的相对稳定性进行第一性原理研究
DOI:
10.1016/j.ijhydene.2015.02.045
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发表时间:
2015-04
影响因子:
7.2
通讯作者:
S.M. Peng
中科院分区:
文献类型:
--
作者:
H.J. Zhang;J.H. Liang;L.S. Sheng;S.M. Peng
We present a detailed study on the bulk properties and relative stability of the ordered and disordered phases of zirconium hydrides by using first-principles calculations combined with the special quasirandom structures (SQS) method. The formation energy, density of states (DOS) and elastic constants are calculated to judge the relative stability of these phases. For the ordered phases, the relative stability of different configurations of the γ and δ phase is especially concerned. It is found that the ζ-Zr2H, “diamond-like” γ-ZrH, [111] configurations of the δ-ZrH1.5and fcc-ZrH2phase are not stable. For the disordered phases, the SQS method, which is a well-proven method to mimic the random alloys, is used to construct supercells of zirconium hydrides with four structures. It is found that the random alloy gradually transforms from an hcp (solid solution phase) into an fcc (δ phase) and then an fct (c/a < 1, ε phase) phase with the increasing H concentration. The equilibrium states are also determined. The γ phase is energetically not favorable at all H concentrations.
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DOI:
10.1088/0305-4608/12/1/003
发表时间:
1982
期刊:
Journal of Physics F: Metal Physics
影响因子:
--
作者:
R. Khoda-bakhsh;D. Ross
通讯作者:
R. Khoda-bakhsh;D. Ross
影响因子:
3.7
作者:
Jiang, C;Wolverton, C;Liu, ZK
通讯作者:
Liu, ZK
影响因子:
3.1
作者:
E. Tulk;M. Kerr;M. Daymond
通讯作者:
E. Tulk;M. Kerr;M. Daymond
DOI:
10.1103/physrev.135.a482
发表时间:
1964-01-01
期刊:
PHYSICAL REVIEW A-GENERAL PHYSICS
影响因子:
--
作者:
FISHER, ES;RENKEN, CJ
通讯作者:
RENKEN, CJ
影响因子:
3.1
作者:
Ripandeep Singh;A. Bind;N. Srinivasan;P. Ståhle
通讯作者:
Ripandeep Singh;A. Bind;N. Srinivasan;P. Ståhle