通过激光加热金刚石对顶砧原位同步辐射X射线衍射测定钼的热状态方程。

Thermal equation of state of Molybdenum determined from in situ synchrotron X-ray diffraction with laser-heated diamond anvil cells.

作者信息

Huang Xiaoli, Li Fangfei, Zhou Qiang, Meng Yue, Litasov Konstantin D, Wang Xin, Liu Bingbing, Cui Tian

机构信息

State Key Lab of Superhard Materials, College of physics, Jilin University Changchun 130012, P.R. China.

High-Pressure Collaborative Access Team, Argonne National Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, USA.

出版信息

Sci Rep. 2016 Feb 17;6:19923. doi: 10.1038/srep19923.

DOI:10.1038/srep19923

PMID:26883479

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4756333/

Abstract

Here we report that the equation of state (EOS) of Mo is obtained by an integrated technique of laser-heated DAC and synchrotron X-ray diffraction. The cold compression and thermal expansion of Mo have been measured up to 80 GPa at 300 K, and 92 GPa at 3470 K, respectively. The P-V-T data have been treated with both thermodynamic and Mie-Grüneisen-Debye methods for the thermal EOS inversion. The results are self-consistent and in agreement with the static multi-anvil compression data of Litasov et al. (J. Appl. Phys. 113, 093507 (2013)) and the theoretical data of Zeng et al. (J. Phys. Chem. B 114, 298 (2010)). These high pressure and high temperature (HPHT) data with high precision firstly complement and close the gap between the resistive heating and the shock compression experiment.

摘要

在此我们报告，通过激光加热金刚石对顶砧与同步加速器X射线衍射的综合技术获得了钼的状态方程（EOS）。分别在300 K下测量了高达80 GPa的钼的冷压缩，以及在3470 K下测量了高达92 GPa的热膨胀。已使用热力学方法和米-格吕内森-德拜方法对P-V-T数据进行处理，以进行热状态方程反演。结果是自洽的，并且与利塔索夫等人（《应用物理杂志》113, 093507 (2013)）的静态多砧压缩数据以及曾等人（《物理化学杂志B》114, 298 (2010)）的理论数据一致。这些高精度的高压高温（HPHT）数据首先补充并弥合了电阻加热与冲击压缩实验之间的差距。