Equation of State of Tantalum up to 133 GPa

被引：12
|
作者：
Tang Ling-Yun [1 ]
Liu Lei [2 ]
Liu Jing [1 ]
Xiao Wan-Sheng [3 ]
Li Yan-Chun [1 ]
Li Xiao-Dong [1 ]
Bi Yan [2 ]
机构：
[1] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
[2] Inst Fluid Phys, Natl Key Lab Shock Wave & Detonat Phys, Mianyang 621900, Peoples R China
[3] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2010年 / 27卷 / 01期
基金：
中国国家自然科学基金;
关键词：
ELASTIC-CONSTANTS; SINGLE-CRYSTALS; PRESSURE; TA; TUNGSTEN; SOLIDS; MODULI;
D O I：
10.1088/0256-307X/27/1/016402
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The static equation of state (EOS) of tantalum (Ta) is determined by in situ energy-dispersive synchrotron powder x-ray diffraction in a diamond anvil cell (DAC) up to 133GPa. The body-centered-cubic (bcc) phase of Ta is found to be stable over the entire pressure range investigated. The bulk moduli and its first pressure derivative of Ta are constrained by fitting the determined pressure-volume data to Vinet form EOS: B-0 = 192.65 +/- (3.08) GPa and B-0' = 3.58 +/- (0.11). For the sake of avoiding the affect of non-hydrostatic stress, argon is used as a pressure media. A careful checking of the stress state of the sample is presented simultaneously.
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页数：4
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