2017年1月
Phase transitions and melting in magnesium oxide
Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
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- 巻
- 27
- 号
- 2
- 開始ページ
- 137
- 終了ページ
- 143
- 記述言語
- 日本語
- 掲載種別
- DOI
- 10.4131/jshpreview.27.137
- 出版者・発行元
- 日本高圧力学会
© 2017, Japan Society of High Pressure Science and Technology. All rights reserved. The Hugoniot of magnesium oxide (MgO) has been investigated experimentally and computationally at the pressure range between 200 GPa and 1 TPa, where B1 and B2 structures are theoretically stable and liquid exists. The shock velocity is found to be proportional with the particle velocity up to the shock velocity of 15 km s -1 , suggesting MgO is in the B1 structure up to a shock pressure of ~350 GPa. Moreover, the Hugoniot data combined with ab initio calculations show two crossovers between the Hugoniot and an extrapolation by the linear relation around 350 GPa (and 8000 K) and 650 GPa (and 14000 K), respectively. The regions separated by the two crossovers are interpreted to be the fields of B1-B2, and B2-liquid transitions, respectively. They are consistent with the results by the ab initio calculations.
- リンク情報
- ID情報
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- DOI : 10.4131/jshpreview.27.137
- ISSN : 0917-639X
- CiNii Articles ID : 130005765986
- CiNii Books ID : AN10452913
- SCOPUS ID : 85023754041