磷氯铅矿的原位高压单晶X射线衍射研究
In-Situ high-pressure single crystal X-ray diffraction of natural pyromorphite
采用同步辐射光源和金刚石对顶砧(DAC)技术，对磷氯铅矿进行了室温下的原位高压实验，实验最高压力达到11.5 GPa，在加压过程中没有发生相变。随着压力的升高，晶胞体积逐渐被压缩，其中a轴的压缩率略大于c轴的，这是由于其结构中存在平行c轴的六方环状孔道。利用三阶Birch-Murnaghan状态方程拟合得到磷氯铅矿的体积模量，K0=49.9(3.6) GPa，K'=9.8（1.1）。
In-situ high pressure single-crystal X-ray diffraction investigtion of pyromorphite was carried out at room temperature using diamond anvil cell (DAC) with synchrotron radiation source. No phase transition of pyromorphite was observed up to the highest pressure of 11.5 GPa. The results obtained from single-crystal X-ray diffraction between 10-4 and 11.5 GPa reveal volume decreasing as a function of pressure, corresponding to K0=49.9(3.6) GPa for bulk modulus and K'=9.8(1.1) for its pressure derivative for a third-order Birch-Murnaghan equation of state.
许寻、秦霏、王英、刘迎新
晶体学地球物理学
磷氯铅矿磷灰石结构X射线衍射压缩性
pyromorphiteapatite structurecompressibilityX-ray diffraction
许寻,秦霏,王英,刘迎新.磷氯铅矿的原位高压单晶X射线衍射研究[EB/OL].(2016-05-27)[2025-08-04].http://www.paper.edu.cn/releasepaper/content/201605-1348.点此复制
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