Magnetism in FeO at Megabar Pressures from X-Ray Emission Spectroscopy
- 15 November 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 83 (20) , 4101-4104
- https://doi.org/10.1103/physrevlett.83.4101
Abstract
We report evidence for a preserved magnetic state in FeO up to 143 GPa at room temperature using high-resolution x-ray emission spectroscopy. This observation is based on the spectral line shape of the Fe emission line. Up to the highest pressure, FeO remains a magnetic insulator. Combining our results with previous Mössbauer data, we present a new magnetic phase diagram of FeO. Features like a closed-loop antiferromagnetic domain confirm that high-pressure investigations can reveal new physical properties and unexpected phenomena.
Keywords
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