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Refinement of the equation of state of tantalum

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arxiv cond-mat/0403080 v1 pith:K4P3ZYWE submitted 2004-03-02 cond-mat.mtrl-sci

Agnes Dewaele , Paul Loubeyre , Mohamed Mezouar This is my paper · ORCID
classification cond-mat.mtrl-sci
keywords pressuredatascaletantalumaccuratelybeencalculationscalibration
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abstract

The volume of tantalum versus pressure has been accurately measured up to 101 GPa by single-crystal x-ray diffraction, with helium as pressure transmitting medium. Slight deviation from previous static determinations is observed. Discrepancy with reduced shock-wave and ultrasonic data supports recent doubts about the calibration of the ruby pressure scale. Finally, first principle calculations of the literature show a positive curvature in $P(V)$ relative to the experimental data, even with a modified pressure scale.

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