An overall comparative study is made of the spin-phonon interactions in several rutile-structure transition-metal difluorides, specifically FeF2, MnF2, NiF2, and CoF2, in terms of recent developments obtained experimentally using inelastic light scattering spectroscopy and theoretically using a modified mean-field approach to estimate spin-pair correlation functions. New experimental data are presented here and interpreted within an extended and comprehensive theoretical treatment to yield estimates for the spin-phonon coupling coefficients and the relative magnitudes of the magneto-optical coupling coefficients.
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Cottam et al. (2019) studied this question.
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