TY - JOUR
T1 - Pressure-induced polarization reversal in multiferroic YMn2 O5
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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U2 - 10.1103/PhysRevB.77.220104
DO - 10.1103/PhysRevB.77.220104
M3 - Article
AN - SCOPUS:46049110909
VL - 77
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 22
M1 - 220104
ER -