大块钙钛矿MgSiO_3和镁方铁矿(Mg,Fe)O的高压合成

英文篇名：Synthesis of Large Bulk MgSiO_3 Perovskite and(Mg,Fe)O Ferropericlase at High-Pressure and High-Temperature
中文刊名：高压物理学报
英文刊名：Chinese Journal of High Pressure Physics
作者：张莉 ; 龚自正 ; 费英伟
英文作者：ZHANG Li~1 ; GONG Zi-Zheng~(1 ; 2) ; FEI Ying-Wei~3(1.Institute of High Pressure and High Temperature Physics ; Southwest Jiaotong University ; Chengdu 610031 ; China ; 2.Department of Environment Engineering ; China Academy of Space Technology ; Beijing 100094 ; China ; 3.Geophysical Laboratory ; Carnegie Institution of Washington ; Washington DC 20015 ; USA)
中文关键词：MgSiO3钙钛矿 ; (Mg ; Fe)O镁方铁矿 ; 高温高压 ; 二级压砧 ; 合成
英文关键词：MgSiO_3-perovskite ; (Mg ; Fe)O ferropericlase ; high pressure and high temperature ; mutli-anvil apparatus ; synthesis
出版日期：2006-12-05
机构：西南交通大学高温高压物理研究所,西南交通大学高温高压物理研究所,华盛顿卡内基研究院地球物理实验室四川成都610031,四川成都610031,中国空间技术研究院总装与环境工程部,北京100094,美国华盛顿20015
年：2006
期：04
出版单位：高压物理学报

摘要

钙钛矿相MgSiO3和镁方铁矿(Mg,Fe)O作为地球下地幔含量最丰富的候选矿物,其高温高压实验数据通常用来与地震学探测数据做对比,对限定下地幔的真实矿物学组分具有决定性的作用。但天然的钙钛矿相MgSiO3和镁方铁矿(Mg,Fe)O很难得到,给这两种矿物的高温高压实验研究工作带来不便。介绍了应用活塞圆筒(Piston-Cylinder)压机和大腔体二级压砧(Mutli-Anvil)压机高温高压合成大块钙钛矿相MgSiO3和不同Fe/Mg比的镁方铁矿(Mg,Fe)O样品的实验技术和实验方法,对所得到的样品进行了微区电子探针、拉曼光谱和X射线衍射分析。所得样品可以作为高压实验特别是冲击压缩实验的初始样品。
MgSiO_3 perovskite and ferropericlase(Mg,Fe)O are generally considered as the most dominant components in the Earth's lower mantle.The experimental data of these phases at high pressures and high temperatures play a key role to constrain the composition of the Earth's lower mantle.However,high pressure experiments at lower mantle conditions,especially the shock wave experiments,are restricted since it is impossible to collect the high-phases of the samples in nature.We introduce the experimental methods to synthesize large bulk MgSiO_3 perovskite and ferropericlase(Mg,Fe)O using piston-cylinder and mutli-anvil apparatuses,and the synthesized samples were analyzed by micro electronic probe,Raman spectrum,and X-Ray diffraction.This makes it possible to do shock wave experiments with the large bulk MgSiO_3 perovskite and ferropericlase(Mg,Fe)O as starting materials.

引文

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