Rhombohedral superhard structure of BC2N
Rhombohedral superhard structure of BC2N
复制标题
BC2N菱面体超硬结构
DOI:
10.1063/1.3086649
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发表时间:
2009-03
影响因子:
3.2
通讯作者:
Cui, Tian
中科院分区:
文献类型:
--
作者:
Oganov, Artem R.;Ma, Yanming;Li, Quan;Zou, Guangtian;Wang, Mei;Cui, Tian
Ab initio evolutionary algorithm was employed to resolve the crystal structure of the observed superhard BC2N. We uncovered two polymorphs with rhombohedral (2 f.u./cell) and orthorhombic (2 f.u./cell) symmetries, with which the experimental x-ray diffraction pattern is well reproduced. Analysis of the total energy results and the simulated energy-loss near-edge spectroscopy suggests that the rhombohedral structure is the best candidate for the superhard BC2N. We further demonstrated that earlier proposed high density and low density forms are likely from this single rhombohedral phase.
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Xiaoguang Luo;Xiaoju Guo;Bo Xu;Qinghua Wu;Qianku Hu;Zhongyuan Liu;Julong He;D. Yu;Yongjun Tian;Hui-Tian Wang
影响因子:
3.7
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影响因子:
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