Raman spectroscopic evidence for multiferroicity in rare earth nickelate single crystals

Ardizzone, I.; Teyssier, J.; Crassee, I.; Kuzmenko, A.B.; Mazzone, D.G.; Gawryluk, D.J.; Medarde, M.; van der Marel, D.

doi:10.1103/PhysRevResearch.3.033007

Raman spectroscopic evidence for multiferroicity in rare earth nickelate single crystals

Ardizzone I, Teyssier J, Crassee I, Kuzmenko AB, Mazzone DG, Gawryluk DJ, Medarde M & van der Marel D

Citation

Ardizzone, I., Teyssier, J., Crassee, I., Kuzmenko, A. B., Mazzone, D. G., Gawryluk, D. J., … van der Marel, D. (2021). Raman spectroscopic evidence for multiferroicity in rare earth nickelate single crystals. Physical Review Research, 3(3), 033007 (10 pp.). https://doi.org/10.1103/PhysRevResearch.3.033007

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:38218

The rare earth nickelates RNiO₃ are metallic at high temperatures and insulating and magnetically ordered at low temperatures. The low temperature phase has been predicted to be type II multiferroic, i.e., ferroelectric and magnetic order are coupled and occur simultaneously. Confirmation of those ideas has been inhibited by the absence of experimental data on single crystals. Here we report on Raman spectroscopic data of RNiO₃ single crystals (R = Y, Er, Ho, Dy, Sm, Nd) for temperatures between 10 and 1000 K. Entering the magnetically ordered phase we observe the appearance of a large number of additional vibrational modes, implying a breaking of inversion symmetry expected for multiferroic order.

Details

Publication Type

Journal Article

Title

Raman spectroscopic evidence for multiferroicity in rare earth nickelate single crystals

Author(s)

Ardizzone, I.

Teyssier, J.

Crassee, I.

Kuzmenko, A.B.

Mazzone, D.G. (3302 Solid State Dynamics)

Gawryluk, D.J. (3703 Solid State Chemistry)