Pressure-induced polarization reversal in multiferroic YMn2 O5

Rajit P. Chaudhury, Clarina R. Dela Cruz, Bernd Lorenz, Yanyi Sun, Ching Wu Chu, S. Park, Sang W. Cheong

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

The low-temperature ferroelectric polarization of multiferroic YMn2 O5 is completely reversed at a critical pressure of 10 kbar and the phase transition from the incommensurate to the commensurate magnetic phase is induced by pressures above 14 kbar. The high-pressure data correlate with thermal-expansion measurements, indicating a significant lattice strain at the low-temperature transition into the incommensurate phase. The results support the exchange striction model for the ferroelectricity in multiferroic RMn2 O5 compounds and they show the importance of magnetic frustration as well as the spin-lattice coupling.

Original languageEnglish
Article number220104
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number22
DOIs
Publication statusPublished - 2008 Jun 24

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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