Thermal equation of state of copper studied by high P-T synchrotron x-ray diffraction

Yuejian Wang, Jianzhong Zhang, Hongwu Xu, Zhijun Lin, Luke L. Daemen, Yusheng Zhao, Liping Wang

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Abstract

The unit-cell volume of copper (Cu) has been measured by synchrotron x-ray at pressures and temperatures of up to 8.1 GPa and 1100 K. From pressure-volume-temperature (P-V-T) measurements, thermoelastic parameters of Cu were derived based on a modified high- T Birch-Murnaghan equation of state and a thermal pressure approach. The ambient bulk modulus derived from this work is comparable to previously reported value, whereas all other thermoelastic parameters of Cu have never been determined before. These results extend our knowledge of the fundamental thermophysical properties on Cu.

Original languageEnglish
Article number071904
JournalApplied Physics Letters
Volume94
Issue number7
DOIs
StatePublished - 2009
Externally publishedYes

Funding

This research was supported by Los Alamos National Laboratory, which is operated by Los Alamos National Security LLC under DOE Contract No. DEAC52-06NA25396. The experimental work was carried out at beam line X17B2 of the National Synchrotron Light Source, Brookhaven National Laboratory, which is supported by the Consortium for Materials Properties Research in Earth Sciences (COMPRES) under NSF cooperative agreement (Contract No. EAR 01-35554).

FundersFunder number
National Science Foundation
U.S. Department of Energy
Los Alamos National Laboratory

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