Ultra-incompressible Orthorhombic Phase of Osmium Tetraboride (OsB4) Predicted from First Principles
Ultra-incompressible Orthorhombic Phase of Osmium Tetraboride (OsB4) Predicted from First Principles
复制标题
根据第一原理预测的四硼化锇 (OsB4) 的超不可压缩正交相
DOI:
10.1021/jp2106378
复制
发表时间:
2012-02
影响因子:
3.7
通讯作者:
Wang, Hui
中科院分区:
文献类型:
--
作者:
Zhang, Meiguang;Yan, Haiyan;Zhang, Gangtai;Wang, Hui
Using the ab initio particle swarm optimization algorithm for crystal structure prediction, we have predicted an orthorhombic Pmmn structure for OsB4, which is energetically much superior to the previously proposed WB4-type structure. The Pmmn structure consists of irregular OsB10 dodecahedrons connected by edges and is stable against decompression into a mixture of Os and B at ambient pressure. OsB4 within this orthorhombic phase is found to be an ultra-incompressible and hard material due to its high bulk modulus (294 GPa) and large hardness (28 GPa), originating from the strong and directional covalent B–B and B–Os bonds.
登录
查看更多内容
影响因子:
4
作者:
Li, Yinwei;Wang, Mei;Cui, Tian;Ma, Yanming;Zou, Guangtian
通讯作者:
Zou, Guangtian
影响因子:
8.6
作者:
Lv, Jian;Wang, Yanchao;Ma, Yanming
通讯作者:
Ma, Yanming
影响因子:
3.2
作者:
Ravindran, P;Fast, L;Eriksson, O
通讯作者:
Eriksson, O
影响因子:
3.7
作者:
Jin-Cheng Zheng
通讯作者:
Jin-Cheng Zheng
影响因子:
4.6
作者:
Meiguang Zhang;Hui Wang;Hongbo Wang;Xinxin Zhang;T. Iitaka;Yanming Ma
通讯作者:
Meiguang Zhang;Hui Wang;Hongbo Wang;Xinxin Zhang;T. Iitaka;Yanming Ma