Abstract We report the observations of Raman scattering of the TO phonon modes from the different layers in Dy/Y rare earth superlattices. It is found that helical phase lock-in transition at about 50 K in the Dy/Y superlattice is accompanied by the softening of TO phonons from both Dy magnetic layers and Y nonmagnetic layers.
Received: 07 December 1994
Accepted manuscript online:
PACS:
63.22.-m
(Phonons or vibrational states in low-dimensional structures and nanoscale materials)
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