Ferroelectric polarization induced nonvolatile modulation effect on magnetic properties in Bi0.95Ba0.05 FeO3 multiferroics

In this paper, we demonstrate a nonvolatile modulation effect on the magnetic properties by electric (E)-field-induced ferroelectric (FE) polarizing in Bi0.95Ba0.05FeO3 single-phase multiferroics. It is found that E-field has much effect on weak ferromagnetic order, but has little effect on strong antiferromagnetic order in the sample. The change of Raman scattering spectra with different FE polar states of the sample, as well as the magnetization change under different polarization times (tp), indicates that the modulation effect on magnetism comes from E-field-induced the change of FE polarization, which couples with magnetic moments in Bi0.95Ba0.05FeO3 sample.