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Magnetoelastic coupling inDyMn2O5via infrared spectroscopy
2008
Physical Review B
We investigated the infrared-active phonons in DyMn 2 O 5 as a function of temperature and magnetic field in order to elucidate the magnetic ordering-induced lattice distortions. Spin-lattice coupling in this geometrically frustrated multiferroic is evidenced by small frequency shifts of several phonon modes at various magnetic ordering temperatures, vibrational frequency shifts between 60 and 65 K from which we extract large coupling constants, and magnetic-field dependence of numerous
doi:10.1103/physrevb.78.064307
fatcat:xpevs2snd5hcdppkmyq3skn2du