Pressure-induced phase transition and phonon softening in

K. A. Smith, S. P. Ramkumar, N. C. Harms, A. J. Clune, S. W. Cheong, Z. Liu, E. A. Nowadnick, J. L. Musfeldt

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We combine diamond anvil cell techniques, synchrotron-based infrared and Raman scattering spectroscopies, a symmetry analysis, and complementary lattice dynamics calculations to explore the pressure-driven phase transition in multiferroic . Comparison of the measured and predicted phonon patterns reveals a structural transition at 15 GPa. Symmetry breaking across the polar antipolar transition takes place via changes in the bipyramidal tilting direction and Lu/Sc displacement pattern, analogous to the strain-driven distortion pathway in and temperature-induced transitions in the rare-earth manganites.

Original languageEnglish (US)
Article number094109
JournalPhysical Review B
Issue number9
StatePublished - Sep 1 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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