Pressure induced high-spin to low-spin transition in FeS evidenced by x-ray emission spectroscopy
Jean-Pascal Rueff, Chi-Chang Kao, Viktor V. Struzhkin, James Badro, Jin-fu Shu, R. J. Hemley, Ho-kwang Mao
Abstract
We report the observation of the pressure-induced high-spin to low-spin transition in FeS using new high-pressure synchrotron x-ray emission spectroscopy techniques. The transition is evidenced by the disappearance of the low-energy satellite in the Fe Kβ emission spectrum of FeS. Moreover, the phase transition is reversible and closely related to the structural phase transition from a manganese phosphide-like phase to a monoclinic phase. The study opens new opportunities for investigating the electronic properties of materials under pressure.
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