Abstract
We performed Raman spectroscopy measurements under temperature changes from 10 K up to 850 K to probe the phonon-spin coupling in YNiMnO. The spin-phonon coupling was observed as a softening of the stretching mode, indicating this phonon stabilizes the magnetic interaction. The result indicates the rare earth ionic radius in ReNiMnO double perovskites is not the unique parameter influencing the spin-coupling magnitude.
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