%0 Journal Article
%T First principles study of the uniaxial compressive strength of bct-C4 carbon allotrope<br>第一性原理研究bct-C4碳材料的强度性质
%A Li Qing-Kun
%A Sun Yi
%A Zhou Yu
%A Zeng Fan-Lin
%A <br>李青坤
%A 孙毅
%A 周玉
%A 曾凡林
%J 物理学报
%D 2012
%I 
%X bct-C4 carbon allotrope has been attracted great interest because its excellent mechanical properties. In this paper, we study the elastic properties and the strength properties of bct-C4 carbon by first-principles method. Our results show that bct-C4 presents a super uniaxial compressive strength of 524.3GPa, which is 6.9% more than the corresponding value of diamond. The high compressive strength originates from the high compressive rate of chemical bond deviating from compressive direction. Our work suggests that bct --C4 carbon can be widely used in the area of high pressure research.
%K first-principles
%K mechanical properties
%K bct-C4 carbon<br>第一性原理
%K 力学性质
%K bct-C4碳
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=78F360FC29C479118E652741D7B65E76&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=9CF7A0430CBB2DFD&sid=25F3C7389C3A2F34&eid=6F6BFE67B8305F54&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=20