"Three-Dimensional Coherent X-Ray Diffraction Imaging of Molten Iron in Mantle Olivine at Nanoscale Resolution"

Huaidong Jiang: Rui Xu, Chien-Chun Chen, Wenge Yang, Jiadong Fan, Xutang Tao, Changyong Song, Yoshiki Kohmura, Tiqiao Xiao, Yong Wang, Yingwei Fei, Tetsuya Ishikawa, Wendy L. Mao, and Jianwei Miao; Physical Review Letters, 05/13/13.

Additional Authors: Rui Xu, Chien-Chun Chen, Wenge Yang, Jiadong Fan, Xutang Tao, Changyong Song, Yoshiki Kohmura, Tiqiao Xiao, Yong Wang, Yingwei Fei, Tetsuya Ishikawa, Wendy L. Mao, and Jianwei Miao

Abstract:

We report quantitative 3D coherent x-ray diffraction imaging of a molten Fe-rich alloy and crystalline olivine sample, synthesized at 6 GPa and 1800 °C, with nanoscale resolution. The 3D mass density map is determined and the 3D distribution of the Fe-rich and Fe-S phases in the olivine-Fe-S sample is observed. Our results indicate that the Fe-rich melt exhibits varied 3D shapes and sizes in the olivine matrix. This work has potential for not only improving our understanding of the complex interactions between Fe-rich core-forming melts and mantle silicate phases but also paves the way for quantitative 3D imaging of materials at nanoscale resolution under extreme pressures and temperatures.