The elastic properties of hexagonal osmium under pressure: The first-principles investigations

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成果类型：

期刊论文

作者：

Deng, X. H.*;Lu, W.;Hu, Y. M.;Gu, H. S.

通讯作者：

Deng, X. H.

作者机构：

[Deng, X. H.] Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.

[Lu, W.; Hu, Y. M.] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China.

[Hu, Y. M.; Gu, H. S.] Hubei Univ, State Key Lab Ferro & Piezoelect Mat & Devices Hu, Wuhan 430062, Peoples R China.

[Hu, Y. M.; Gu, H. S.] Hubei Univ, Fac Phys & Elect Technol, Wuhan 430062, Peoples R China.

通讯机构：

[Deng, X. H.] H

Hengyang Normal Univ, Dept Phys & Elect Informat Sci, Hengyang 421008, Peoples R China.

语种：

英文

关键词：

Equation of state;Elastic constants;Debye temperature;Hexagonal osmium

期刊：

Physica B: Condensed Matter

ISSN：

0921-4526

年：

2009

卷：

404

期：

8-11

页码：

1218-1221

DOI：

10.1016/j.physb.2008.11.200

机构署名：

本校为第一且通讯机构

院系归属：

物理与电子工程学院

摘要：

The first-principles methods are adopted to investigate the equation of state (EOS) and elastic constants of hexagonal osmium at applied pressures up to 100 GPa. The obtained normalized volume dependence of the applied pressure is in agreement with the experiment. Five independent elastic constants at zero pressure and high pressure are calculated. From the obtained elastic constants, mechanical anisotropy, acoustic velocity anisotropy and Debye temperature ΘD at the applied pressure are also calculated. The results obtained are consistent with the available experimental and theoretical ...

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The elastic properties of hexagonal osmium under pressure: The first-principles investigations

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