Phonon dispersion throughout the iron spin crossover in ferropericlase

Ferropericlase (Fp), $({\mathrm{Mg}}_{1\ensuremath{-}x}{\mathrm{Fe}}_{x})\mathrm{O}$, is the second most abundant phase in the Earth's lower mantle. At relevant pressure-temperature conditions, iron in Fp undergoes a high spin (HS), S = 2, to low spin (LS), S = 0, state change. The nature of this ph... View More