The pressure-volume-temperature equation of state of MgO derived from shock Hugoniot data and its application as a pressure scale

The pressure-volume-temperature ( P - V - T ) equation of state (EOS) of MgO is widely used as a pressure scale in static compression experiments. However, there are remarkable inconsistencies among different previously proposed MgO pressure scales. We calculated the P - V - T EOS of MgO up to 300 G...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 2010-06, Vol.107 (11), p.113518-113518-6
Main Authors: Jin, Ke, Li, Xinzhu, Wu, Qiang, Geng, Huayun, Cai, Lingcang, Zhou, Xianming, Jing, Fuqian
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The pressure-volume-temperature ( P - V - T ) equation of state (EOS) of MgO is widely used as a pressure scale in static compression experiments. However, there are remarkable inconsistencies among different previously proposed MgO pressure scales. We calculated the P - V - T EOS of MgO up to 300 GPa and 3000 K based on experimental shock Hugoniot data and a simple thermal pressure model within the Mie-Grüneisen-type analysis framework. All of the parameters used can be measured experimentally with high accuracies. We found that, in overall, the calculated P - V - T EOS of MgO has excellent agreement with the available volume compression data over a wide range of pressure and temperature. A comparison of our results with the previous theoretical investigations has also been performed and confirms that our calculated P - V - T EOS of MgO can be used as a reliable pressure scale for static experiments at high pressures and high temperatures.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3406140