Light impurity atoms as the probes for the electronic structures of actinide dioxides
Light impurity atoms as the probes for the electronic structures of actinide dioxides
复制标题
轻杂质原子作为二锕系元素电子结构的探针
DOI:
10.1016/j.commatsci.2017.10.003
复制
发表时间:
2018-02
影响因子:
3.3
通讯作者:
Peng Shi
中科院分区:
文献类型:
--
作者:
Bingyun Ao;Ruizhi Qiu;Guangfeng Zhang;Zhen Pu;Xiaolin Wang;Peng Shi
First-principles density functional theory are used to calculate the formation energies of ten light impurities X (X: H, He, Li, Be, B, C, N, O, F and Ne) in seven actinide dioxides AnO2(An: Th, Pa, U, Np, Pu, Am and Cm), in order to elucidate the relative stability of X and to obtain some trends of impurities behaviors. The Hubbard parameterUis used to describe the strongly correlated electron behavior of An 5felectrons. The results indicate that the formation energies of X significantly depend on the properties of AnO2and X. For X at the octahedral interstitial sites of AnO2, F is the only energetically favorable impurity for all AnO2, owing to its strong oxidability; H in PaO2, O in PaO2and UO2, Li in PuO2, AmO2and CmO2, Be in AmO2and CmO2are also energetically favorable. The oxidability or reductivity of X and the delocalization → localization transition of 5f electrons across actinide series can account for the trends of the behaviors of X in AnO2. Particularly, H, a very typical amphoteric element, is chosen to illustrate its difference existence states in AnO2. H prefers to occupy the octahedral interstitial sites of early AnO2or form hydroxyl group in the later AnO2.
登录
查看更多内容
影响因子:
4.5
作者:
X. Liu;D. Andersson;B. Uberuaga
通讯作者:
X. Liu;D. Andersson;B. Uberuaga
影响因子:
3.7
作者:
Kresse, G;Furthmuller, J
通讯作者:
Furthmuller, J
影响因子:
1.7
作者:
J. Sarrao;E. Bauer;J. Mitchell;P. Tobash;J. Thompson
通讯作者:
J. Sarrao;E. Bauer;J. Mitchell;P. Tobash;J. Thompson
影响因子:
44.1
作者:
Freysoldt, Christoph;Grabowski, Blazej;Van de Walle, Chris G.
通讯作者:
Van de Walle, Chris G.
影响因子:
3.1
作者:
M. Bertolus;M. Freyss;B. Dorado;G. Martin;K. Hoang;S. Maillard;Richard Skorek;P. Garcia;C. Valot;A. Chartier;L. Brutzel;Paul C. M. Fossati;R. Grimes;D. Parfitt;C. L. Bishop;S. Murphy;M. Rushton;D. Staicu;E. Yakub;S. Nichenko;M. Krack;Fabien Devynck;Raoul Ngayam-Happy;K. Govers;C. Deo;R. Behera
通讯作者:
M. Bertolus;M. Freyss;B. Dorado;G. Martin;K. Hoang;S. Maillard;Richard Skorek;P. Garcia;C. Valot;A. Chartier;L. Brutzel;Paul C. M. Fossati;R. Grimes;D. Parfitt;C. L. Bishop;S. Murphy;M. Rushton;D. Staicu;E. Yakub;S. Nichenko;M. Krack;Fabien Devynck;Raoul Ngayam-Happy;K. Govers;C. Deo;R. Behera