High-pressure elastic behavior of Ca4La6(SiO4)6(OH)2 a synthetic rare-earth silicate apatite: a powder X-ray diffraction study up to 9.33 GPa
High-pressure elastic behavior of Ca4La6(SiO4)6(OH)2 a synthetic rare-earth silicate apatite: a powder X-ray diffraction study up to 9.33 GPa
复制标题
Ca4La6(SiO4)6(OH)2（一种合成稀土硅酸盐磷灰石）的高压弹性行为：高达 9.33 GPa 的粉末 X 射线衍射研究
DOI：
10.1007/s00269-013-0626-0
复制
发表时间：
2014-02-01
影响因子：
1.4
通讯作者：
Xie, Hongsen
中科院分区：
文献类型：
--
作者：
Fan, Dawei;Wei, Shuyi;Xie, Hongsen
利用原位角色散x射线衍射和金刚石砧细胞研究了合成的Ca4La6(SiO4)(6)(OH)(2)在300 K下的压缩行为，达到约9.33 GPa。在所研究的压力范围内未观察到相变。零压体积V(0)和K(0)的值分别为：V (0) = 579.2 +/- a 0.1 (3), K (0) = 89 +/- a 2gpa，和。如果固定为4，则K(0)为110 +/- a2gpa。轴向可压缩模量分析表明，A轴（K (a0) = 79 +/- A 2 GPa）比c轴（K (c0) = 121 +/- A 7 GPa）更可压缩。比较了Ca4La6(SiO4)(6)(OH)(2)与同结构磷灰石钙的高压弹性响应。讨论了Ca4La6(SiO4)(6)(OH)(2)与磷灰石钙弹性性能不同的可能原因。
The compression behavior of a synthetic Ca4La6(SiO4)(6)(OH)(2) has been investigated to about 9.33 GPa at 300 K using in situ angle-dispersive X-ray diffraction and a diamond anvil cell. No phase transition has been observed within the pressure range investigated. The values of zero-pressure volume V (0), K (0), and refined with a third-order Birch-Murnaghan equation of state are V (0) = 579.2 +/- A 0.1 (3), K (0) = 89 +/- A 2 GPa, and . If is fixed at 4, K (0) is obtained as 110 +/- A 2 GPa. Analysis of axial compressible modulus shows that the a-axis (K (a0) = 79 +/- A 2 GPa) is more compressible than the c-axis (K (c0) = 121 +/- A 7 GPa). A comparison between the high-pressure elastic response of Ca4La6(SiO4)(6)(OH)(2) and the iso-structural calcium apatites is made. The possible reasons of the different elastic behavior between Ca4La6(SiO4)(6)(OH)(2) and calcium apatites are discussed.