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[1] The electronic spin and valence states of Fe in post‐ perovskite ((Mg 0.75 Fe 0.25)SiO 3) have been investigated by synchrotron X‐ray diffraction, Mössbauer and X‐ray emission spectroscopy at 142 GPa and 300 K. Rietveld refinement of the X‐ray diffraction patterns revealed that our sample was dominated by CaIrO 3 ‐type post‐perovskite. Combined(More)
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