Pressure effect on the electronic structure of iron in ( Mg , Fe ) ( Si , Al ) O 3 perovskite : a combined synchrotron Mössbauer and X-ray emission spectroscopy study up to 100 GPa

@inproceedings{Li2006PressureEO,
  title={Pressure effect on the electronic structure of iron in ( Mg , Fe ) ( Si , Al ) O 3 perovskite : a combined synchrotron M{\"o}ssbauer and X-ray emission spectroscopy study up to 100 GPa},
  author={Jingjing Li and Wolfgang Sturhahn and James Mark Jackson and Viktor V Struzhkin and Jung Fu Lin and Jing Zhao and Ho Kwang Mao and Gaozhong Shen},
  year={2006}
}
We investigated the valence state and spin state of iron in an Al-bearing ferromagnesian silicate perovskite sample with the composition (Mg0.88Fe0.09) (Si0.94Al0.10)O3 between 1 bar and 100 GPa and at 300 K, using diamond cells and synchrotron Mössbauer spectroscopy techniques. At pressures below 12 GPa, our Mössbauer spectra can be sufficiently fitted by a ‘‘two-doublet’’ model, which assumes one ferrous Fe-like site and one ferric Fe-like site with distinct hyperfine parameters. The simplest… CONTINUE READING
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