Magnetic biasing of a ferroelectric hysteresis loop in a multiferroic orthoferrite.
In a multiferroic orthoferrite Dy0.7Tb0.3FeO3, which shows electric-field-(E-)driven magnetization (M) reversal due to a tight clamping between polarization (P) and M, a gigantic effect of magnetic-field (H) biasing on P-E hysteresis loops is observed in the case of rapid E sweeping. The magnitude of the bias E field can be controlled by varying the magnitude of H, and its sign can be reversed by changing the sign of H or the relative clamping direction between P and M. The origin of this unconventional biasing effect is ascribed to the difference in the Zeeman energy between the +P and -P states coupled with the M states with opposite sign.
RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan.
Y
Y
Tokunaga
RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan.
Y
Y
Taguchi
RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan and Department of Advanced Materials Science, University of Tokyo, Kashiwa 277-8561, Japan and RIKEN SPring-8 Center, Hyogo 679-5148, Japan.
T
T
Arima
RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan and Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan.
Y
Y
Tokura