Pressure-induced polarization reversal in multiferroic $YM{n}_2{O}_5$

Abstract

The low-temperature ferroelectric polarization of multiferroic $YM{n}_2{O}_5$ 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 $RM{n}_2{O}_5$ compounds and they show the importance of magnetic frustration as well as the spin-lattice coupling.

References in corpus (5)

• Spin current and magneto-electric effect in non-collinear magnets
• Role of the Dzyaloshinskii-Moriya interaction in multiferroic perovskites
• Structural Anomalies at the Magnetic and Ferroelectric Transitions in $RM{n}_2{O}_5$ (R=Tb, Dy, Ho)
• Pressure induced enhancement of ferroelectricity in multiferroic $R$Mn${}_2$O${}_5$($R$=Tb,Dy, and Ho)
• Magnetoelastic Effects and Magnetic Phase Diagram of Multiferroic $DyM{n}_2{O}_5$

Cited by in corpus (2)

• Complex Spin Structures and Origin of the Magneto-Electric Coupling in YMn2O5
• Dynamical magnetoelectric effects induced by the Dzyaloshinskii-Moriya interaction in multiferroics