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

研究成果: Article同行評審

30 引文 斯高帕斯(Scopus)

摘要

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.

原文English
文章編號220104
期刊Physical Review B - Condensed Matter and Materials Physics
77
發行號22
DOIs
出版狀態Published - 2008 6月 24

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學

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