Single crystal X-ray diffraction studies of Fe2O3 at multimegabar pressures

We propose in situ single-crystal X-ray diffraction studies of Fe2O3 in the diamond-anvil cell at pressures from 200 GPa to 400 GPa. All samples will be studied after in house pulsed-laser heating up temperatures over 3000K. Therefore, simulated PT-conditions will be close to the mantle of Super-Earths or Earth's outer core. We would like to establish relationships with different phases of Fe(II, III) oxides at multimegabar pressures.

本研究拟在200 GPa至400 GPa的压力区间内，于金刚石压腔（diamond-anvil cell）中开展三氧化二铁（Fe₂O₃）的原位单晶X射线衍射（single-crystal X-ray diffraction）研究。所有样品均将在实验室内部经脉冲激光加热至3000开尔文以上后进行测试分析。据此，模拟得到的温压（PT）条件将与超级地球的地幔或地球外核的环境高度相近。本研究旨在厘清多兆巴压力下铁(II,III)氧化物不同物相之间的相关联系。