%0 Journal Article
%T 布里奇曼石的晶体结构及物理性质<br>Crystal Structure of Bridgmanite and Its Physical Properties
%A 魏雪会
%J Applied Physics
%P 259-269
%@ 2160-7575
%D 2021
%I Hans Publishing
%R 10.12677/APP.2021.115030
%X 布里奇曼石(bridgmanite)是地球上最丰富的矿物，能够稳定存在于下地幔的极端高温高压环境中。布里奇曼石的晶格中有一定量的Fe和Al，这导致它的晶体结构复杂。化学成分的变化会引起结构的改变，进而对其密度、压缩性、电导率等物理性质产生影响。布里奇曼石的物理性质是理解下地幔动力学、地幔对流、弹性性质等的关键，并且为地震波速异常可能提供解释。<br />
Bridgmanite, remaining stable under extremely high temperature and pressure conditions of the earth’s lower mantle, is the most abundant mineral on the earth. Doping with small doses of Fe and Al in its lattice, bridgmanite crystallography is fairly complex. Variation of chemical compositions causes changes in crystal structure, which in turn influences density, compressibility, electrical conductivity and other physical properties significantly. Physical property of bridgmanite is the key to understand lower mantle dynamics, mantle convection, elasticity, as well as anomalies of seismic velocities.
%K 布里奇曼石，晶体结构，Fe和Al的占位，X-Ray衍射<br>Bridgmanite
%K Crystal Structure
%K Occupation of Fe and Al
%K X-Ray Diffraction
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=42298