Effect of pressure on the crystal structure of perovskite-type MgSiO3
Effect of pressure on the crystal structure of perovskite-type MgSiO3
复制标题
压力对钙钛矿型MgSiO3晶体结构的影响
DOI：
10.1007/bf00309809
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发表时间：
1987
影响因子：
1.4
通讯作者：
H. Takeda
中科院分区：
文献类型：
--
作者：
Y. Kudoh;E. Ito;H. Takeda
本文用金刚石压室和单晶四圆衍射法研究了钙钛矿型MgSiO_3的晶体结构。所观察到的晶胞压缩给出了体积模量Ko=2.47 Mbar，假设K′o=4。晶胞压缩主要由SiO6八面体的倾斜控制。压力的作用是使Mg多面体由12配位向8配位转变。SiO6和MgO 8的多面体体积模量分别为3.8 Mbar和1.9 Mbar。
The crystal structure of perovskite-type MgSiO3 has been studied up to 96 kbar, using a miniature diamondanvil pressure cell and by means of single-crystal four-circle diffractometry. The observed unit cell compression gives a bulk modulus of Ko=2.47 Mbar, assuming K′o=4. The unit cell compression is controlled mainly by the tilting of SiO6 octahedra. The effect of pressure is to change Mg polyhedron towards 8-fold coordination rather than 12-fold coordination. The polyhedral bulk moduli of SiO6 and MgO8 are 3.8 Mbar and 1.9 Mbar, respectively.
DOI：
10.1524/zkri.1985.171.14.291
发表时间：
1985
期刊：
Zeitschrift für Kristallographie - Crystalline Materials
影响因子：
--
作者：
Y. Kudoh;Y. Takéuchi
通讯作者：
Y. Kudoh;Y. Takéuchi