Published January 2010 | Version v1
Journal article Metadata-only

Equation of State of Tantalum up to 133 GPa

Creators

  • 1. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)
  • 2. National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, Mianyang 621900 (China)
  • 3. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640 (China)

Description

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 133 GPa. 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: B0 = 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. (condensed matter: structure, mechanical and thermal properties)

Availability note (English)

Available from http://dx.doi.org/10.1088/0256-307X/27/1/016402

Additional details

Identifiers

DOI
10.1088/0256-307X/27/1/016402;

Publishing Information

Journal Title
Chinese Physics Letters
Journal Volume
27
Journal Issue
1
Journal Page Range
[4 p.]
ISSN
0256-307X
CODEN
CPLEEU

INIS

Country of Publication
China
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
45000451
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ARGON; BCC LATTICES; COMPRESSION STRENGTH; DIAMONDS; EQUATIONS OF STATE; POWDERS; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; STRESSES; SYNCHROTRON RADIATION; TANTALUM; X-RAY DIFFRACTION
Descriptors DEC
BREMSSTRAHLUNG; CARBON; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; DIFFRACTION; ELECTROMAGNETIC RADIATION; ELEMENTS; EQUATIONS; FLUIDS; GASES; MECHANICAL PROPERTIES; METALS; MINERALS; NONMETALS; PRESSURE RANGE; RADIATIONS; RARE GASES; REFRACTORY METALS; SCATTERING; TRANSITION ELEMENTS