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

doi:10.1103/PhysRevB.77.220104

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

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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 language	English
Article number	220104
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.77.220104
State	Published - Jun 24 2008

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title = "Pressure-induced polarization reversal in multiferroic YMn2 O5",

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.",

author = "Chaudhury, {Rajit P.} and {Dela Cruz}, {Clarina R.} and Bernd Lorenz and Yanyi Sun and Chu, {Ching Wu} and S. Park and Cheong, {Sang W.}",

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AU - Chaudhury, Rajit P.

AU - Dela Cruz, Clarina R.

AU - Lorenz, Bernd

AU - Sun, Yanyi

AU - Chu, Ching Wu

AU - Park, S.

AU - Cheong, Sang W.

PY - 2008/6/24

Y1 - 2008/6/24

N2 - 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.

AB - 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.

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DO - 10.1103/PhysRevB.77.220104

M3 - Article

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SN - 1098-0121

VL - 77

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 22

M1 - 220104

ER -

Pressure-induced polarization reversal in multiferroic YMn2 O5

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