Dynamic magnetoelectric effect in multiferroic DyCrO4
Abstract
The dynamic magnetoelectric (ME) effect of the scheelite-type DyCrO4 has been investigated by measurements of the temperature and magnetic field dependence of the dynamic magnetoelectric coefficient (αE = dE/dH). A high dynamic ME coefficient αE is obtained in the multiferroic phase after a poling process under both electric and magnetic fields. The maximum of αE appears at the critical field of a metamagnetic transition where spin fluctuation becomes the most significant. The dynamic ME effect for H ⊥ E is much stronger than that for H ∥ E, consistent with the spin current model. Moreover, the sign of αE is reversed when the direction of electric polarization is reversed by a negative electric field. Therefore, the state of αE can be used to store information in single-phase multiferroics.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (6)
Xiaonan Yuan
Department of Applied Physics and Center of Quantum Materials and Devices, Chongqing University 1 , Chongqing 401331,
Yingjie He
School of Metallurgy and Environment
Deshun Hong
Department of Applied Physics and Center of Quantum Materials and Devices Chongqing University Chongqing China
Xudong Shen
Youwen Long
Beijing National Laboratory for Condensed Matter Physics
Young Sun
Department of Applied Physics, Chongqing University 1 , Chongqing 401331,