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NiSi相的状态方程。

The equation of state of the phase of NiSi.

作者信息

Lord Oliver T, Thomson Andrew R, Wann Elizabeth T H, Wood Ian G, Dobson David P, Vocadlo Lidunka

机构信息

School of Earth Sciences, University of Bristol , Wills Memorial Building, Queen's Road, Bristol BS81RJ, UK.

School of Earth Sciences, University of Bristol , Wills Memorial Building, Queen's Road, Bristol BS81RJ, UK ; Department of Earth Sciences, University College London , Gower Street, London WC1E 6BT, UK.

出版信息

J Appl Crystallogr. 2015 Nov 28;48(Pt 6):1914-1920. doi: 10.1107/S1600576715020087. eCollection 2015 Dec 1.

DOI:10.1107/S1600576715020087
PMID:26664346
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4665664/
Abstract

The equation of state of the orthorhombic phase of NiSi with symmetry has been determined at room temperature from synchrotron-based X-ray diffraction measurements of its lattice parameters, made in a diamond anvil cell. Measurements were performed up to 44 GPa, using Ne as the pressure medium and Au as the pressure standard. The resulting pressure-volume (-) data have been fitted with a Birch-Murnaghan equation of state of third order to yield = 11.650 (7) Å atom, = 162 (3) GPa and ' = 4.6 (2). In addition, - data have been collected on NiSi in the B20 structure using both Ne and He as the pressure media and Cu and Au as the pressure standards, also to 44 GPa. A fit using the same Birch-Murnaghan equation of state of third order yields = 11.364 (6) Å atom, = 171 (4) GPa and ' = 5.5 (3).

摘要

通过在金刚石对顶砧中对其晶格参数进行基于同步加速器的X射线衍射测量，在室温下确定了具有对称性的NiSi正交相的状态方程。测量在高达44 GPa的压力下进行，使用Ne作为压力介质，Au作为压力标准。所得的压力-体积（-）数据已用三阶Birch-Murnaghan状态方程进行拟合，得到 = 11.650（7）Å原子， = 162（3）GPa和' = 4.6（2）。此外，还使用Ne和He作为压力介质以及Cu和Au作为压力标准，对B20结构的NiSi收集了压力-数据，压力也达到44 GPa。使用相同的三阶Birch-Murnaghan状态方程进行拟合得到 = 11.364（6）Å原子， = 171（4）GPa和' = 5.5（3）。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/086f379fa3f6/j-48-01914-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/0c9f353c9f70/j-48-01914-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/162926c59d5a/j-48-01914-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/5aab384af050/j-48-01914-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/7bebc5d604bd/j-48-01914-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/086f379fa3f6/j-48-01914-fig5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/0c9f353c9f70/j-48-01914-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/162926c59d5a/j-48-01914-fig2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/5aab384af050/j-48-01914-fig3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/7bebc5d604bd/j-48-01914-fig4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bd7/4665664/086f379fa3f6/j-48-01914-fig5.jpg

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本文引用的文献

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Toward an internally consistent pressure scale.迈向内部一致的压力标度。
Proc Natl Acad Sci U S A. 2007 May 29;104(22):9182-6. doi: 10.1073/pnas.0609013104. Epub 2007 May 2.
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