High-pressure radial X-ray diffraction study of osmium to 58 GPa

	High-pressure radial X-ray diffraction study of osmium to 58 GPa
	Chen, H; He, D; Liu, J; Li, Y; Peng, F; Li, Z; Wang, J; Bai, L刘景; Li YC(李延春); Bai LG(白利刚)
刊名	EUROPEAN PHYSICAL JOURNAL B
	2010
卷号	73 期号:3 页码:321-326
通讯作者	[Chen, H. ; He, D. ; Peng, F. ; Li, Z. ; Wang, J.] Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Peoples R China ; [Liu, J. ; Li, Y. ; Bai, L.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要	Nonhydrostatic compression behavior of osmium (Os) was investigated up to 58.2 GPa using radial X-ray diffraction (RXRD) together with lattice strain theory in a diamond-anvil cell. The apparent bulk modulus of Os derived from RXRD data varies from 262 GPa to 413 GPa, depending on I, the orientation of the diffraction planes with respect to the loading axis. Fitting to the third-order Birch-Murnaghan equation of state, the RXRD data obtained at I = 54.7A degrees yields a bulk modulus K(0) = 390 +/- 6 GPa with pressure derivative K(') (0) fixed at 4. The ratio of differential stress to shear modulus t/G ranges from 0.024 to 0.029 at the pressures of 15.7-58.2 GPa. The yield strength was observed to increase with compression and reach the value of 11.7 GPa at the highest pressure. This confirms that Os is the strongest known pure metallic material compared with the reported stiff elemental metals such as W, Mo and Re. It was found that the apparent c/a ratio changed with the nonhydrostatic compression, as well as the orientation I in our experiments. Moreover, the aggregate moduli of Os at high pressure were determined from the RXRD measurements.
学科主题	Physics
类目[WOS]	Physics, Condensed Matter
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000274327000002
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/236967]
专题	高能物理研究所_多学科研究中心高能物理研究所_加速器中心中国科学院高能物理研究所_中国散裂中子源
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Chen, H,He, D,Liu, J,et al. High-pressure radial X-ray diffraction study of osmium to 58 GPa[J]. EUROPEAN PHYSICAL JOURNAL B,2010,73(3):321-326.
APA	Chen, H.,He, D.,Liu, J.,Li, Y.,Peng, F.,...&白利刚.(2010).High-pressure radial X-ray diffraction study of osmium to 58 GPa.EUROPEAN PHYSICAL JOURNAL B,73(3),321-326.
MLA	Chen, H,et al."High-pressure radial X-ray diffraction study of osmium to 58 GPa".EUROPEAN PHYSICAL JOURNAL B 73.3(2010):321-326.