个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 辽宁省高校重点实验室主任
性别:男
毕业院校:日本国名古屋大学
学位:博士
所在单位:材料科学与工程学院
学科:材料加工工程
联系方式:0411-84708940
电子邮箱:tjuli@dlut.edu.cn
Instabilities in cubic diamond under non-hydrostatic compressive stress
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论文类型:期刊论文
发表时间:2008-07-01
发表刊物:18th European Conference on Diamond, Diamond-Like Materials, Carbon Nanotubes, Nitrides and Silicon Carbide
收录刊物:SCIE、EI、CPCI-S
卷号:17
期号:7-10,SI
页面范围:1353-1355
ISSN号:0925-9635
摘要:Diamond is the hardest material with superior mechanical stability. Due to the widespread application in high pressure research, stability limit of diamond at ultrahigh pressure is an importance issue for theoretical and experimental studies, which remains controversy between theoretical prediction and experimental observations. In this paper, we report first-principle calculations on the relative stability of diamond under non-hydrostatic compression and the computational results demonstrate that the cubic diamond would become unstable with respect to the lonsdalite under isotropic stress tensor with mean stress as low as 26 GPa, while agree well with experimental findings under similar non-hydrostatic loading conditions. (C) 2008 Elsevier B.V. All rights reserved.